diff --git a/src/business/admin/admin.controller.ts b/src/business/admin/admin.controller.ts
index 5db7353..cdf2b16 100644
--- a/src/business/admin/admin.controller.ts
+++ b/src/business/admin/admin.controller.ts
@@ -15,10 +15,17 @@
 
 import { Body, Controller, Get, HttpCode, HttpStatus, Param, Post, Query, UseGuards, ValidationPipe, UsePipes, Res, Logger } from '@nestjs/common';
 import { ApiBearerAuth, ApiBody, ApiOperation, ApiParam, ApiProduces, ApiQuery, ApiResponse, ApiTags } from '@nestjs/swagger';
-import { AdminGuard } from '../../core/guards/admin.guard';
+import { AdminGuard } from './guards/admin.guard';
 import { AdminService } from './admin.service';
-import { AdminLoginDto, AdminResetPasswordDto } from '../../dto/admin.dto';
-import { AdminLoginResponseDto, AdminUsersResponseDto, AdminCommonResponseDto, AdminUserResponseDto, AdminRuntimeLogsResponseDto } from '../../dto/admin_response.dto';
+import { AdminLoginDto, AdminResetPasswordDto } from './dto/admin-login.dto';
+import { 
+  AdminLoginResponseDto, 
+  AdminUsersResponseDto, 
+  AdminCommonResponseDto, 
+  AdminUserResponseDto, 
+  AdminRuntimeLogsResponseDto 
+} from './dto/admin-response.dto';
+import { Throttle, ThrottlePresets } from '../security/decorators/throttle.decorator';
 import type { Response } from 'express';
 import * as fs from 'fs';
 import * as path from 'path';
@@ -35,6 +42,10 @@ export class AdminController {
   @ApiOperation({ summary: '管理员登录', description: '仅允许 role=9 的账户登录后台' })
   @ApiBody({ type: AdminLoginDto })
   @ApiResponse({ status: 200, description: '登录成功', type: AdminLoginResponseDto })
+  @ApiResponse({ status: 401, description: '登录失败' })
+  @ApiResponse({ status: 403, description: '权限不足或账户被禁用' })
+  @ApiResponse({ status: 429, description: '登录尝试过于频繁' })
+  @Throttle(ThrottlePresets.LOGIN)
   @Post('auth/login')
   @HttpCode(HttpStatus.OK)
   @UsePipes(new ValidationPipe({ transform: true }))
@@ -73,7 +84,9 @@ export class AdminController {
   @ApiParam({ name: 'id', description: '用户ID' })
   @ApiBody({ type: AdminResetPasswordDto })
   @ApiResponse({ status: 200, description: '重置成功', type: AdminCommonResponseDto })
+  @ApiResponse({ status: 429, description: '操作过于频繁' })
   @UseGuards(AdminGuard)
+  @Throttle(ThrottlePresets.ADMIN_OPERATION)
   @Post('users/:id/reset-password')
   @HttpCode(HttpStatus.OK)
   @UsePipes(new ValidationPipe({ transform: true }))
diff --git a/src/business/admin/admin.module.ts b/src/business/admin/admin.module.ts
index 5927865..3970dbc 100644
--- a/src/business/admin/admin.module.ts
+++ b/src/business/admin/admin.module.ts
@@ -21,5 +21,6 @@ import { AdminService } from './admin.service';
   imports: [AdminCoreModule, LoggerModule],
   controllers: [AdminController],
   providers: [AdminService],
+  exports: [AdminService], // 导出AdminService供其他模块使用
 })
 export class AdminModule {}
diff --git a/src/business/admin/admin.service.ts b/src/business/admin/admin.service.ts
index ecd94e7..72db880 100644
--- a/src/business/admin/admin.service.ts
+++ b/src/business/admin/admin.service.ts
@@ -11,12 +11,21 @@
  * @since 2025-12-19
  */
 
-import { Inject, Injectable, Logger, NotFoundException } from '@nestjs/common';
+import { Inject, Injectable, Logger, NotFoundException, BadRequestException } from '@nestjs/common';
 import { AdminCoreService } from '../../core/admin_core/admin_core.service';
 import { Users } from '../../core/db/users/users.entity';
 import { UsersService } from '../../core/db/users/users.service';
 import { UsersMemoryService } from '../../core/db/users/users_memory.service';
 import { LogManagementService } from '../../core/utils/logger/log_management.service';
+import { UserStatus, getUserStatusDescription } from '../user-mgmt/enums/user-status.enum';
+import { UserStatusDto, BatchUserStatusDto } from '../user-mgmt/dto/user-status.dto';
+import { 
+  UserStatusResponseDto, 
+  BatchUserStatusResponseDto, 
+  UserStatusStatsResponseDto,
+  UserStatusInfoDto,
+  BatchOperationResultDto
+} from '../user-mgmt/dto/user-status-response.dto';
 
 export interface AdminApiResponse<T = any> {
   success: boolean;
@@ -108,8 +117,318 @@ export class AdminService {
       phone: user.phone,
       avatar_url: user.avatar_url,
       role: user.role,
+      status: user.status || UserStatus.ACTIVE, // 兼容旧数据
       created_at: user.created_at,
       updated_at: user.updated_at,
     };
   }
+
+  /**
+   * 格式化用户状态信息
+   * 
+   * @param user 用户实体
+   * @returns 格式化的用户状态信息
+   */
+  private formatUserStatus(user: Users): UserStatusInfoDto {
+    return {
+      id: user.id.toString(),
+      username: user.username,
+      nickname: user.nickname,
+      status: user.status || UserStatus.ACTIVE,
+      status_description: getUserStatusDescription(user.status || UserStatus.ACTIVE),
+      updated_at: user.updated_at
+    };
+  }
+
+  /**
+   * 修改用户状态
+   * 
+   * 功能描述：
+   * 管理员修改指定用户的账户状态，支持激活、锁定、禁用等操作
+   * 
+   * 业务逻辑：
+   * 1. 验证用户是否存在
+   * 2. 检查状态变更的合法性
+   * 3. 更新用户状态
+   * 4. 记录状态变更日志
+   * 
+   * @param userId 用户ID
+   * @param userStatusDto 状态修改数据
+   * @returns 修改结果
+   * 
+   * @throws NotFoundException 当用户不存在时
+   * @throws BadRequestException 当状态变更不合法时
+   */
+  async updateUserStatus(userId: bigint, userStatusDto: UserStatusDto): Promise<UserStatusResponseDto> {
+    try {
+      this.logger.log('开始修改用户状态', {
+        operation: 'update_user_status',
+        userId: userId.toString(),
+        newStatus: userStatusDto.status,
+        reason: userStatusDto.reason,
+        timestamp: new Date().toISOString()
+      });
+
+      // 1. 验证用户是否存在
+      const user = await this.usersService.findOne(userId);
+      if (!user) {
+        this.logger.warn('修改用户状态失败：用户不存在', {
+          operation: 'update_user_status',
+          userId: userId.toString()
+        });
+        throw new NotFoundException('用户不存在');
+      }
+
+      // 2. 检查状态变更的合法性
+      if (user.status === userStatusDto.status) {
+        this.logger.warn('修改用户状态失败：状态未发生变化', {
+          operation: 'update_user_status',
+          userId: userId.toString(),
+          currentStatus: user.status,
+          newStatus: userStatusDto.status
+        });
+        throw new BadRequestException('用户状态未发生变化');
+      }
+
+      // 3. 更新用户状态
+      const updatedUser = await this.usersService.update(userId, {
+        status: userStatusDto.status
+      });
+
+      // 4. 记录状态变更日志
+      this.logger.log('用户状态修改成功', {
+        operation: 'update_user_status',
+        userId: userId.toString(),
+        oldStatus: user.status,
+        newStatus: userStatusDto.status,
+        reason: userStatusDto.reason,
+        timestamp: new Date().toISOString()
+      });
+
+      return {
+        success: true,
+        data: {
+          user: this.formatUserStatus(updatedUser),
+          reason: userStatusDto.reason
+        },
+        message: '用户状态修改成功'
+      };
+
+    } catch (error) {
+      this.logger.error('修改用户状态失败', {
+        operation: 'update_user_status',
+        userId: userId.toString(),
+        error: error instanceof Error ? error.message : String(error),
+        timestamp: new Date().toISOString()
+      });
+
+      if (error instanceof NotFoundException || error instanceof BadRequestException) {
+        throw error;
+      }
+
+      return {
+        success: false,
+        message: '用户状态修改失败',
+        error_code: 'USER_STATUS_UPDATE_FAILED'
+      };
+    }
+  }
+
+  /**
+   * 批量修改用户状态
+   * 
+   * 功能描述：
+   * 管理员批量修改多个用户的账户状态
+   * 
+   * 业务逻辑：
+   * 1. 验证用户ID列表
+   * 2. 逐个处理用户状态修改
+   * 3. 收集成功和失败的结果
+   * 4. 返回批量操作结果
+   * 
+   * @param batchUserStatusDto 批量状态修改数据
+   * @returns 批量修改结果
+   */
+  async batchUpdateUserStatus(batchUserStatusDto: BatchUserStatusDto): Promise<BatchUserStatusResponseDto> {
+    try {
+      this.logger.log('开始批量修改用户状态', {
+        operation: 'batch_update_user_status',
+        userCount: batchUserStatusDto.user_ids.length,
+        newStatus: batchUserStatusDto.status,
+        reason: batchUserStatusDto.reason,
+        timestamp: new Date().toISOString()
+      });
+
+      const successUsers: UserStatusInfoDto[] = [];
+      const failedUsers: Array<{ user_id: string; error: string }> = [];
+
+      // 1. 逐个处理用户状态修改
+      for (const userIdStr of batchUserStatusDto.user_ids) {
+        try {
+          const userId = BigInt(userIdStr);
+          
+          // 2. 验证用户是否存在
+          const user = await this.usersService.findOne(userId);
+          if (!user) {
+            failedUsers.push({
+              user_id: userIdStr,
+              error: '用户不存在'
+            });
+            continue;
+          }
+
+          // 3. 检查状态是否需要变更
+          if (user.status === batchUserStatusDto.status) {
+            failedUsers.push({
+              user_id: userIdStr,
+              error: '用户状态未发生变化'
+            });
+            continue;
+          }
+
+          // 4. 更新用户状态
+          const updatedUser = await this.usersService.update(userId, {
+            status: batchUserStatusDto.status
+          });
+
+          successUsers.push(this.formatUserStatus(updatedUser));
+
+        } catch (error) {
+          failedUsers.push({
+            user_id: userIdStr,
+            error: error instanceof Error ? error.message : '未知错误'
+          });
+        }
+      }
+
+      // 5. 构建批量操作结果
+      const result: BatchOperationResultDto = {
+        success_users: successUsers,
+        failed_users: failedUsers,
+        success_count: successUsers.length,
+        failed_count: failedUsers.length,
+        total_count: batchUserStatusDto.user_ids.length
+      };
+
+      this.logger.log('批量修改用户状态完成', {
+        operation: 'batch_update_user_status',
+        successCount: result.success_count,
+        failedCount: result.failed_count,
+        totalCount: result.total_count,
+        timestamp: new Date().toISOString()
+      });
+
+      return {
+        success: true,
+        data: {
+          result,
+          reason: batchUserStatusDto.reason
+        },
+        message: `批量用户状态修改完成，成功：${result.success_count}，失败：${result.failed_count}`
+      };
+
+    } catch (error) {
+      this.logger.error('批量修改用户状态失败', {
+        operation: 'batch_update_user_status',
+        error: error instanceof Error ? error.message : String(error),
+        timestamp: new Date().toISOString()
+      });
+
+      return {
+        success: false,
+        message: '批量用户状态修改失败',
+        error_code: 'BATCH_USER_STATUS_UPDATE_FAILED'
+      };
+    }
+  }
+
+  /**
+   * 获取用户状态统计
+   * 
+   * 功能描述：
+   * 获取各种用户状态的数量统计信息
+   * 
+   * 业务逻辑：
+   * 1. 查询所有用户
+   * 2. 按状态分组统计
+   * 3. 计算各状态数量
+   * 4. 返回统计结果
+   * 
+   * @returns 状态统计信息
+   */
+  async getUserStatusStats(): Promise<UserStatusStatsResponseDto> {
+    try {
+      this.logger.log('开始获取用户状态统计', {
+        operation: 'get_user_status_stats',
+        timestamp: new Date().toISOString()
+      });
+
+      // 1. 查询所有用户（这里可以优化为直接查询统计信息）
+      const allUsers = await this.usersService.findAll(10000, 0); // 假设最多1万用户
+
+      // 2. 按状态分组统计
+      const stats = {
+        active: 0,
+        inactive: 0,
+        locked: 0,
+        banned: 0,
+        deleted: 0,
+        pending: 0,
+        total: allUsers.length
+      };
+
+      // 3. 计算各状态数量
+      allUsers.forEach((user: Users) => {
+        const status = user.status || UserStatus.ACTIVE;
+        switch (status) {
+          case UserStatus.ACTIVE:
+            stats.active++;
+            break;
+          case UserStatus.INACTIVE:
+            stats.inactive++;
+            break;
+          case UserStatus.LOCKED:
+            stats.locked++;
+            break;
+          case UserStatus.BANNED:
+            stats.banned++;
+            break;
+          case UserStatus.DELETED:
+            stats.deleted++;
+            break;
+          case UserStatus.PENDING:
+            stats.pending++;
+            break;
+        }
+      });
+
+      this.logger.log('用户状态统计获取成功', {
+        operation: 'get_user_status_stats',
+        stats,
+        timestamp: new Date().toISOString()
+      });
+
+      return {
+        success: true,
+        data: {
+          stats,
+          timestamp: new Date().toISOString()
+        },
+        message: '用户状态统计获取成功'
+      };
+
+    } catch (error) {
+      this.logger.error('获取用户状态统计失败', {
+        operation: 'get_user_status_stats',
+        error: error instanceof Error ? error.message : String(error),
+        timestamp: new Date().toISOString()
+      });
+
+      return {
+        success: false,
+        message: '用户状态统计获取失败',
+        error_code: 'USER_STATUS_STATS_FAILED'
+      };
+    }
+  }
 }
diff --git a/src/business/admin/dto/admin-login.dto.ts b/src/business/admin/dto/admin-login.dto.ts
new file mode 100644
index 0000000..e30099c
--- /dev/null
+++ b/src/business/admin/dto/admin-login.dto.ts
@@ -0,0 +1,34 @@
+/**
+ * 管理员相关 DTO
+ * 
+ * 功能描述：
+ * - 定义管理员登录与用户密码重置的请求结构
+ * - 使用 class-validator 进行参数校验
+ * 
+ * @author jianuo
+ * @version 1.0.0
+ * @since 2025-12-19
+ */
+
+import { ApiProperty } from '@nestjs/swagger';
+import { IsNotEmpty, IsString, MinLength } from 'class-validator';
+
+export class AdminLoginDto {
+  @ApiProperty({ description: '登录标识符（用户名/邮箱/手机号）', example: 'admin' })
+  @IsString()
+  @IsNotEmpty()
+  identifier: string;
+
+  @ApiProperty({ description: '密码', example: 'Admin123456' })
+  @IsString()
+  @IsNotEmpty()
+  password: string;
+}
+
+export class AdminResetPasswordDto {
+  @ApiProperty({ description: '新密码（至少8位，包含字母和数字）', example: 'NewPass1234' })
+  @IsString()
+  @IsNotEmpty()
+  @MinLength(8)
+  new_password: string;
+}
\ No newline at end of file
diff --git a/src/business/admin/dto/admin-response.dto.ts b/src/business/admin/dto/admin-response.dto.ts
new file mode 100644
index 0000000..4b15a0c
--- /dev/null
+++ b/src/business/admin/dto/admin-response.dto.ts
@@ -0,0 +1,104 @@
+/**
+ * 管理员响应 DTO
+ * 
+ * 功能描述：
+ * - 定义管理员相关接口的响应格式
+ * - 提供 Swagger 文档生成支持
+ * 
+ * @author jianuo
+ * @version 1.0.0
+ * @since 2025-12-19
+ */
+
+import { ApiProperty } from '@nestjs/swagger';
+
+export class AdminLoginResponseDto {
+  @ApiProperty({ description: '是否成功', example: true })
+  success: boolean;
+
+  @ApiProperty({ description: '消息', example: '登录成功' })
+  message: string;
+
+  @ApiProperty({ description: 'JWT Token', example: 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...' })
+  token?: string;
+
+  @ApiProperty({ description: '管理员信息', required: false })
+  admin?: {
+    id: string;
+    username: string;
+    email: string;
+    role: number;
+  };
+}
+
+export class AdminUsersResponseDto {
+  @ApiProperty({ description: '是否成功', example: true })
+  success: boolean;
+
+  @ApiProperty({ description: '消息', example: '获取用户列表成功' })
+  message: string;
+
+  @ApiProperty({ description: '用户列表', type: 'array' })
+  users?: Array<{
+    id: string;
+    username: string;
+    email: string;
+    phone: string;
+    role: number;
+    status: string;
+    created_at: string;
+    updated_at: string;
+  }>;
+
+  @ApiProperty({ description: '总数', example: 100 })
+  total?: number;
+
+  @ApiProperty({ description: '偏移量', example: 0 })
+  offset?: number;
+
+  @ApiProperty({ description: '限制数量', example: 100 })
+  limit?: number;
+}
+
+export class AdminUserResponseDto {
+  @ApiProperty({ description: '是否成功', example: true })
+  success: boolean;
+
+  @ApiProperty({ description: '消息', example: '获取用户详情成功' })
+  message: string;
+
+  @ApiProperty({ description: '用户信息', required: false })
+  user?: {
+    id: string;
+    username: string;
+    email: string;
+    phone: string;
+    role: number;
+    status: string;
+    created_at: string;
+    updated_at: string;
+    last_login_at?: string;
+  };
+}
+
+export class AdminCommonResponseDto {
+  @ApiProperty({ description: '是否成功', example: true })
+  success: boolean;
+
+  @ApiProperty({ description: '消息', example: '操作成功' })
+  message: string;
+}
+
+export class AdminRuntimeLogsResponseDto {
+  @ApiProperty({ description: '是否成功', example: true })
+  success: boolean;
+
+  @ApiProperty({ description: '消息', example: '获取日志成功' })
+  message: string;
+
+  @ApiProperty({ description: '日志内容', type: 'array', items: { type: 'string' } })
+  logs?: string[];
+
+  @ApiProperty({ description: '返回行数', example: 200 })
+  lines?: number;
+}
\ No newline at end of file
diff --git a/src/business/admin/guards/admin.guard.ts b/src/business/admin/guards/admin.guard.ts
new file mode 100644
index 0000000..e3c0d9d
--- /dev/null
+++ b/src/business/admin/guards/admin.guard.ts
@@ -0,0 +1,43 @@
+/**
+ * 管理员鉴权守卫
+ * 
+ * 功能描述：
+ * - 保护后台管理接口
+ * - 校验 Authorization: Bearer <admin_token>
+ * - 仅允许 role=9 的管理员访问
+ * 
+ * @author jianuo
+ * @version 1.0.0
+ * @since 2025-12-19
+ */
+
+import { CanActivate, ExecutionContext, Injectable, UnauthorizedException } from '@nestjs/common';
+import { Request } from 'express';
+import { AdminCoreService, AdminAuthPayload } from '../../../core/admin_core/admin_core.service';
+
+export interface AdminRequest extends Request {
+  admin?: AdminAuthPayload;
+}
+
+@Injectable()
+export class AdminGuard implements CanActivate {
+  constructor(private readonly adminCoreService: AdminCoreService) {}
+
+  canActivate(context: ExecutionContext): boolean {
+    const req = context.switchToHttp().getRequest<AdminRequest>();
+    const auth = req.headers['authorization'];
+
+    if (!auth || Array.isArray(auth)) {
+      throw new UnauthorizedException('缺少Authorization头');
+    }
+
+    const [scheme, token] = auth.split(' ');
+    if (scheme !== 'Bearer' || !token) {
+      throw new UnauthorizedException('Authorization格式错误');
+    }
+
+    const payload = this.adminCoreService.verifyToken(token);
+    req.admin = payload;
+    return true;
+  }
+}
diff --git a/src/business/admin/index.ts b/src/business/admin/index.ts
new file mode 100644
index 0000000..42b0cad
--- /dev/null
+++ b/src/business/admin/index.ts
@@ -0,0 +1,24 @@
+/**
+ * 管理员模块统一导出
+ * 
+ * 功能描述：
+ * - 导出管理员相关的所有组件
+ * - 提供统一的导入入口
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+// 控制器
+export * from './admin.controller';
+
+// 服务
+export * from './admin.service';
+
+// DTO
+export * from './dto/admin-login.dto';
+export * from './dto/admin-response.dto';
+
+// 模块
+export * from './admin.module';
\ No newline at end of file
diff --git a/src/business/admin/tests b/src/business/admin/tests
new file mode 100644
index 0000000..86df850
--- /dev/null
+++ b/src/business/admin/tests
@@ -0,0 +1,81 @@
+import { ExecutionContext, UnauthorizedException } from '@nestjs/common';
+import { AdminCoreService, AdminAuthPayload } from '../admin_core/admin_core.service';
+import { AdminGuard } from './admin.guard';
+
+describe('AdminGuard', () => {
+  const payload: AdminAuthPayload = {
+    adminId: '1',
+    username: 'admin',
+    role: 9,
+    iat: 1,
+    exp: 2,
+  };
+
+  const adminCoreServiceMock: Pick<AdminCoreService, 'verifyToken'> = {
+    verifyToken: jest.fn(),
+  };
+
+  const makeContext = (authorization?: any) => {
+    const req: any = { headers: {} };
+    if (authorization !== undefined) {
+      req.headers['authorization'] = authorization;
+    }
+
+    const ctx: Partial<ExecutionContext> = {
+      switchToHttp: () => ({
+        getRequest: () => req,
+        getResponse: () => ({} as any),
+        getNext: () => ({} as any),
+      }),
+    };
+
+    return { ctx: ctx as ExecutionContext, req };
+  };
+
+  beforeEach(() => {
+    jest.resetAllMocks();
+  });
+
+  it('should allow access with valid admin token', () => {
+    (adminCoreServiceMock.verifyToken as jest.Mock).mockReturnValue(payload);
+
+    const guard = new AdminGuard(adminCoreServiceMock as AdminCoreService);
+    const { ctx, req } = makeContext('Bearer valid');
+
+    expect(guard.canActivate(ctx)).toBe(true);
+    expect(adminCoreServiceMock.verifyToken).toHaveBeenCalledWith('valid');
+    expect(req.admin).toEqual(payload);
+  });
+
+  it('should deny access without token', () => {
+    const guard = new AdminGuard(adminCoreServiceMock as AdminCoreService);
+    const { ctx } = makeContext(undefined);
+
+    expect(() => guard.canActivate(ctx)).toThrow(UnauthorizedException);
+  });
+
+  it('should deny access with invalid Authorization format', () => {
+    const guard = new AdminGuard(adminCoreServiceMock as AdminCoreService);
+    const { ctx } = makeContext('InvalidFormat');
+
+    expect(() => guard.canActivate(ctx)).toThrow(UnauthorizedException);
+  });
+
+  it('should deny access when verifyToken throws (invalid/expired)', () => {
+    (adminCoreServiceMock.verifyToken as jest.Mock).mockImplementation(() => {
+      throw new UnauthorizedException('Token已过期');
+    });
+
+    const guard = new AdminGuard(adminCoreServiceMock as AdminCoreService);
+    const { ctx } = makeContext('Bearer bad');
+
+    expect(() => guard.canActivate(ctx)).toThrow(UnauthorizedException);
+  });
+
+  it('should deny access when Authorization header is an array', () => {
+    const guard = new AdminGuard(adminCoreServiceMock as AdminCoreService);
+    const { ctx } = makeContext(['Bearer token']);
+
+    expect(() => guard.canActivate(ctx)).toThrow(UnauthorizedException);
+  });
+});
diff --git a/src/business/auth/auth.module.ts b/src/business/auth/auth.module.ts
new file mode 100644
index 0000000..28e8065
--- /dev/null
+++ b/src/business/auth/auth.module.ts
@@ -0,0 +1,26 @@
+/**
+ * 用户认证业务模块
+ * 
+ * 功能描述：
+ * - 整合所有用户认证相关功能
+ * - 用户登录、注册、密码管理
+ * - GitHub OAuth集成
+ * - 邮箱验证功能
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import { Module } from '@nestjs/common';
+import { LoginController } from './controllers/login.controller';
+import { LoginService } from './services/login.service';
+import { LoginCoreModule } from '../../core/login_core/login_core.module';
+
+@Module({
+  imports: [LoginCoreModule],
+  controllers: [LoginController],
+  providers: [LoginService],
+  exports: [LoginService],
+})
+export class AuthModule {}
\ No newline at end of file
diff --git a/src/business/login/login.controller.ts b/src/business/auth/controllers/login.controller.ts
similarity index 91%
rename from src/business/login/login.controller.ts
rename to src/business/auth/controllers/login.controller.ts
index dc117c5..7c6fdea 100644
--- a/src/business/login/login.controller.ts
+++ b/src/business/auth/controllers/login.controller.ts
@@ -22,8 +22,8 @@
 import { Controller, Post, Put, Body, HttpCode, HttpStatus, ValidationPipe, UsePipes, Logger, Res } from '@nestjs/common';
 import { ApiTags, ApiOperation, ApiResponse as SwaggerApiResponse, ApiBody } from '@nestjs/swagger';
 import { Response } from 'express';
-import { LoginService, ApiResponse, LoginResponse } from './login.service';
-import { LoginDto, RegisterDto, GitHubOAuthDto, ForgotPasswordDto, ResetPasswordDto, ChangePasswordDto, EmailVerificationDto, SendEmailVerificationDto } from '../../dto/login.dto';
+import { LoginService, ApiResponse, LoginResponse } from '../services/login.service';
+import { LoginDto, RegisterDto, GitHubOAuthDto, ForgotPasswordDto, ResetPasswordDto, ChangePasswordDto, EmailVerificationDto, SendEmailVerificationDto } from '../dto/login.dto';
 import { 
   LoginResponseDto, 
   RegisterResponseDto, 
@@ -32,7 +32,9 @@ import {
   CommonResponseDto,
   TestModeEmailVerificationResponseDto,
   SuccessEmailVerificationResponseDto
-} from '../../dto/login_response.dto';
+} from '../dto/login_response.dto';
+import { Throttle, ThrottlePresets } from '../../security/decorators/throttle.decorator';
+import { Timeout, TimeoutPresets } from '../../security/decorators/timeout.decorator';
 
 @ApiTags('auth')
 @Controller('auth')
@@ -65,6 +67,16 @@ export class LoginController {
     status: 401, 
     description: '用户名或密码错误' 
   })
+  @SwaggerApiResponse({ 
+    status: 403, 
+    description: '账户被禁用或锁定' 
+  })
+  @SwaggerApiResponse({ 
+    status: 429, 
+    description: '登录尝试过于频繁' 
+  })
+  @Throttle(ThrottlePresets.LOGIN)
+  @Timeout(TimeoutPresets.NORMAL)
   @Post('login')
   @HttpCode(HttpStatus.OK)
   @UsePipes(new ValidationPipe({ transform: true }))
@@ -99,6 +111,12 @@ export class LoginController {
     status: 409, 
     description: '用户名或邮箱已存在' 
   })
+  @SwaggerApiResponse({ 
+    status: 429, 
+    description: '注册请求过于频繁' 
+  })
+  @Throttle(ThrottlePresets.REGISTER)
+  @Timeout(TimeoutPresets.NORMAL)
   @Post('register')
   @HttpCode(HttpStatus.CREATED)
   @UsePipes(new ValidationPipe({ transform: true }))
@@ -180,6 +198,11 @@ export class LoginController {
     status: 404, 
     description: '用户不存在' 
   })
+  @SwaggerApiResponse({ 
+    status: 429, 
+    description: '发送频率过高' 
+  })
+  @Throttle(ThrottlePresets.SEND_CODE)
   @Post('forgot-password')
   @UsePipes(new ValidationPipe({ transform: true }))
   async forgotPassword(
@@ -222,6 +245,11 @@ export class LoginController {
     status: 404, 
     description: '用户不存在' 
   })
+  @SwaggerApiResponse({ 
+    status: 429, 
+    description: '重置请求过于频繁' 
+  })
+  @Throttle(ThrottlePresets.RESET_PASSWORD)
   @Post('reset-password')
   @HttpCode(HttpStatus.OK)
   @UsePipes(new ValidationPipe({ transform: true }))
@@ -302,6 +330,8 @@ export class LoginController {
     status: 429, 
     description: '发送频率过高' 
   })
+  @Throttle(ThrottlePresets.SEND_CODE)
+  @Timeout(TimeoutPresets.EMAIL_SEND)
   @Post('send-email-verification')
   @UsePipes(new ValidationPipe({ transform: true }))
   async sendEmailVerification(
@@ -380,6 +410,7 @@ export class LoginController {
     status: 429, 
     description: '发送频率过高' 
   })
+  @Throttle(ThrottlePresets.SEND_CODE)
   @Post('resend-email-verification')
   @UsePipes(new ValidationPipe({ transform: true }))
   async resendEmailVerification(
diff --git a/src/business/auth/dto/login.dto.ts b/src/business/auth/dto/login.dto.ts
new file mode 100644
index 0000000..6fa11f0
--- /dev/null
+++ b/src/business/auth/dto/login.dto.ts
@@ -0,0 +1,374 @@
+/**
+ * 登录业务数据传输对象
+ * 
+ * 功能描述：
+ * - 定义登录相关API的请求数据结构
+ * - 提供数据验证规则和错误提示
+ * - 确保API接口的数据格式一致性
+ * 
+ * @author moyin
+ * @version 1.0.0
+ * @since 2025-12-17
+ */
+
+import { 
+  IsString, 
+  IsEmail, 
+  IsPhoneNumber, 
+  IsNotEmpty, 
+  Length, 
+  IsOptional,
+  Matches,
+  IsNumberString
+} from 'class-validator';
+import { ApiProperty } from '@nestjs/swagger';
+
+/**
+ * 登录请求DTO
+ */
+export class LoginDto {
+  /**
+   * 登录标识符
+   * 支持用户名、邮箱或手机号登录
+   */
+  @ApiProperty({
+    description: '登录标识符，支持用户名、邮箱或手机号',
+    example: 'testuser',
+    minLength: 1,
+    maxLength: 100
+  })
+  @IsString({ message: '登录标识符必须是字符串' })
+  @IsNotEmpty({ message: '登录标识符不能为空' })
+  @Length(1, 100, { message: '登录标识符长度需在1-100字符之间' })
+  identifier: string;
+
+  /**
+   * 密码
+   */
+  @ApiProperty({
+    description: '用户密码',
+    example: 'password123',
+    minLength: 1,
+    maxLength: 128
+  })
+  @IsString({ message: '密码必须是字符串' })
+  @IsNotEmpty({ message: '密码不能为空' })
+  @Length(1, 128, { message: '密码长度需在1-128字符之间' })
+  password: string;
+}
+
+/**
+ * 注册请求DTO
+ */
+export class RegisterDto {
+  /**
+   * 用户名
+   */
+  @ApiProperty({
+    description: '用户名，只能包含字母、数字和下划线',
+    example: 'testuser',
+    minLength: 1,
+    maxLength: 50,
+    pattern: '^[a-zA-Z0-9_]+$'
+  })
+  @IsString({ message: '用户名必须是字符串' })
+  @IsNotEmpty({ message: '用户名不能为空' })
+  @Length(1, 50, { message: '用户名长度需在1-50字符之间' })
+  @Matches(/^[a-zA-Z0-9_]+$/, { message: '用户名只能包含字母、数字和下划线' })
+  username: string;
+
+  /**
+   * 密码
+   */
+  @ApiProperty({
+    description: '密码，必须包含字母和数字，长度8-128字符',
+    example: 'password123',
+    minLength: 8,
+    maxLength: 128
+  })
+  @IsString({ message: '密码必须是字符串' })
+  @IsNotEmpty({ message: '密码不能为空' })
+  @Length(8, 128, { message: '密码长度需在8-128字符之间' })
+  @Matches(/^(?=.*[a-zA-Z])(?=.*\d)/, { message: '密码必须包含字母和数字' })
+  password: string;
+
+  /**
+   * 昵称
+   */
+  @ApiProperty({
+    description: '用户昵称',
+    example: '测试用户',
+    minLength: 1,
+    maxLength: 50
+  })
+  @IsString({ message: '昵称必须是字符串' })
+  @IsNotEmpty({ message: '昵称不能为空' })
+  @Length(1, 50, { message: '昵称长度需在1-50字符之间' })
+  nickname: string;
+
+  /**
+   * 邮箱（可选）
+   */
+  @ApiProperty({
+    description: '邮箱地址（可选）',
+    example: 'test@example.com',
+    required: false
+  })
+  @IsOptional()
+  @IsEmail({}, { message: '邮箱格式不正确' })
+  email?: string;
+
+  /**
+   * 手机号（可选）
+   */
+  @ApiProperty({
+    description: '手机号码（可选）',
+    example: '+8613800138000',
+    required: false
+  })
+  @IsOptional()
+  @IsPhoneNumber(null, { message: '手机号格式不正确' })
+  phone?: string;
+
+  /**
+   * 邮箱验证码（当提供邮箱时必填）
+   */
+  @ApiProperty({
+    description: '邮箱验证码，当提供邮箱时必填',
+    example: '123456',
+    pattern: '^\\d{6}$',
+    required: false
+  })
+  @IsOptional()
+  @IsString({ message: '验证码必须是字符串' })
+  @Matches(/^\d{6}$/, { message: '验证码必须是6位数字' })
+  email_verification_code?: string;
+}
+
+/**
+ * GitHub OAuth登录请求DTO
+ */
+export class GitHubOAuthDto {
+  /**
+   * GitHub用户ID
+   */
+  @ApiProperty({
+    description: 'GitHub用户ID',
+    example: '12345678',
+    minLength: 1,
+    maxLength: 100
+  })
+  @IsString({ message: 'GitHub ID必须是字符串' })
+  @IsNotEmpty({ message: 'GitHub ID不能为空' })
+  @Length(1, 100, { message: 'GitHub ID长度需在1-100字符之间' })
+  github_id: string;
+
+  /**
+   * 用户名
+   */
+  @ApiProperty({
+    description: 'GitHub用户名',
+    example: 'octocat',
+    minLength: 1,
+    maxLength: 50
+  })
+  @IsString({ message: '用户名必须是字符串' })
+  @IsNotEmpty({ message: '用户名不能为空' })
+  @Length(1, 50, { message: '用户名长度需在1-50字符之间' })
+  username: string;
+
+  /**
+   * 昵称
+   */
+  @ApiProperty({
+    description: 'GitHub显示名称',
+    example: 'The Octocat',
+    minLength: 1,
+    maxLength: 50
+  })
+  @IsString({ message: '昵称必须是字符串' })
+  @IsNotEmpty({ message: '昵称不能为空' })
+  @Length(1, 50, { message: '昵称长度需在1-50字符之间' })
+  nickname: string;
+
+  /**
+   * 邮箱（可选）
+   */
+  @ApiProperty({
+    description: 'GitHub邮箱地址（可选）',
+    example: 'octocat@github.com',
+    required: false
+  })
+  @IsOptional()
+  @IsEmail({}, { message: '邮箱格式不正确' })
+  email?: string;
+
+  /**
+   * 头像URL（可选）
+   */
+  @ApiProperty({
+    description: 'GitHub头像URL（可选）',
+    example: 'https://github.com/images/error/octocat_happy.gif',
+    required: false
+  })
+  @IsOptional()
+  @IsString({ message: '头像URL必须是字符串' })
+  avatar_url?: string;
+}
+
+/**
+ * 忘记密码请求DTO
+ */
+export class ForgotPasswordDto {
+  /**
+   * 邮箱或手机号
+   */
+  @ApiProperty({
+    description: '邮箱或手机号',
+    example: 'test@example.com',
+    minLength: 1,
+    maxLength: 100
+  })
+  @IsString({ message: '标识符必须是字符串' })
+  @IsNotEmpty({ message: '邮箱或手机号不能为空' })
+  @Length(1, 100, { message: '标识符长度需在1-100字符之间' })
+  identifier: string;
+}
+
+/**
+ * 重置密码请求DTO
+ */
+export class ResetPasswordDto {
+  /**
+   * 邮箱或手机号
+   */
+  @ApiProperty({
+    description: '邮箱或手机号',
+    example: 'test@example.com',
+    minLength: 1,
+    maxLength: 100
+  })
+  @IsString({ message: '标识符必须是字符串' })
+  @IsNotEmpty({ message: '邮箱或手机号不能为空' })
+  @Length(1, 100, { message: '标识符长度需在1-100字符之间' })
+  identifier: string;
+
+  /**
+   * 验证码
+   */
+  @ApiProperty({
+    description: '6位数字验证码',
+    example: '123456',
+    pattern: '^\\d{6}$'
+  })
+  @IsString({ message: '验证码必须是字符串' })
+  @IsNotEmpty({ message: '验证码不能为空' })
+  @Matches(/^\d{6}$/, { message: '验证码必须是6位数字' })
+  verification_code: string;
+
+  /**
+   * 新密码
+   */
+  @ApiProperty({
+    description: '新密码，必须包含字母和数字，长度8-128字符',
+    example: 'newpassword123',
+    minLength: 8,
+    maxLength: 128
+  })
+  @IsString({ message: '新密码必须是字符串' })
+  @IsNotEmpty({ message: '新密码不能为空' })
+  @Length(8, 128, { message: '新密码长度需在8-128字符之间' })
+  @Matches(/^(?=.*[a-zA-Z])(?=.*\d)/, { message: '新密码必须包含字母和数字' })
+  new_password: string;
+}
+
+/**
+ * 修改密码请求DTO
+ */
+export class ChangePasswordDto {
+  /**
+   * 用户ID
+   * 实际应用中应从JWT令牌中获取，这里为了演示放在请求体中
+   */
+  @ApiProperty({
+    description: '用户ID（实际应用中应从JWT令牌中获取）',
+    example: '1'
+  })
+  @IsNumberString({}, { message: '用户ID必须是数字字符串' })
+  @IsNotEmpty({ message: '用户ID不能为空' })
+  user_id: string;
+
+  /**
+   * 旧密码
+   */
+  @ApiProperty({
+    description: '当前密码',
+    example: 'oldpassword123',
+    minLength: 1,
+    maxLength: 128
+  })
+  @IsString({ message: '旧密码必须是字符串' })
+  @IsNotEmpty({ message: '旧密码不能为空' })
+  @Length(1, 128, { message: '旧密码长度需在1-128字符之间' })
+  old_password: string;
+
+  /**
+   * 新密码
+   */
+  @ApiProperty({
+    description: '新密码，必须包含字母和数字，长度8-128字符',
+    example: 'newpassword123',
+    minLength: 8,
+    maxLength: 128
+  })
+  @IsString({ message: '新密码必须是字符串' })
+  @IsNotEmpty({ message: '新密码不能为空' })
+  @Length(8, 128, { message: '新密码长度需在8-128字符之间' })
+  @Matches(/^(?=.*[a-zA-Z])(?=.*\d)/, { message: '新密码必须包含字母和数字' })
+  new_password: string;
+}
+
+/**
+ * 邮箱验证请求DTO
+ */
+export class EmailVerificationDto {
+  /**
+   * 邮箱地址
+   */
+  @ApiProperty({
+    description: '邮箱地址',
+    example: 'test@example.com'
+  })
+  @IsEmail({}, { message: '邮箱格式不正确' })
+  @IsNotEmpty({ message: '邮箱不能为空' })
+  email: string;
+
+  /**
+   * 验证码
+   */
+  @ApiProperty({
+    description: '6位数字验证码',
+    example: '123456',
+    pattern: '^\\d{6}$'
+  })
+  @IsString({ message: '验证码必须是字符串' })
+  @IsNotEmpty({ message: '验证码不能为空' })
+  @Matches(/^\d{6}$/, { message: '验证码必须是6位数字' })
+  verification_code: string;
+}
+
+/**
+ * 发送邮箱验证码请求DTO
+ */
+export class SendEmailVerificationDto {
+  /**
+   * 邮箱地址
+   */
+  @ApiProperty({
+    description: '邮箱地址',
+    example: 'test@example.com'
+  })
+  @IsEmail({}, { message: '邮箱格式不正确' })
+  @IsNotEmpty({ message: '邮箱不能为空' })
+  email: string;
+}
\ No newline at end of file
diff --git a/src/business/auth/dto/login_response.dto.ts b/src/business/auth/dto/login_response.dto.ts
new file mode 100644
index 0000000..ef853f2
--- /dev/null
+++ b/src/business/auth/dto/login_response.dto.ts
@@ -0,0 +1,395 @@
+/**
+ * 登录业务响应数据传输对象
+ * 
+ * 功能描述：
+ * - 定义登录相关API的响应数据结构
+ * - 提供Swagger文档生成支持
+ * - 确保API响应的数据格式一致性
+ * 
+ * @author moyin
+ * @version 1.0.0
+ * @since 2025-12-17
+ */
+
+import { ApiProperty } from '@nestjs/swagger';
+
+/**
+ * 用户信息响应DTO
+ */
+export class UserInfoDto {
+  @ApiProperty({
+    description: '用户ID',
+    example: '1'
+  })
+  id: string;
+
+  @ApiProperty({
+    description: '用户名',
+    example: 'testuser'
+  })
+  username: string;
+
+  @ApiProperty({
+    description: '用户昵称',
+    example: '测试用户'
+  })
+  nickname: string;
+
+  @ApiProperty({
+    description: '邮箱地址',
+    example: 'test@example.com',
+    required: false
+  })
+  email?: string;
+
+  @ApiProperty({
+    description: '手机号码',
+    example: '+8613800138000',
+    required: false
+  })
+  phone?: string;
+
+  @ApiProperty({
+    description: '头像URL',
+    example: 'https://example.com/avatar.jpg',
+    required: false
+  })
+  avatar_url?: string;
+
+  @ApiProperty({
+    description: '用户角色',
+    example: 1
+  })
+  role: number;
+
+  @ApiProperty({
+    description: '创建时间',
+    example: '2025-12-17T10:00:00.000Z'
+  })
+  created_at: Date;
+}
+
+/**
+ * 登录响应数据DTO
+ */
+export class LoginResponseDataDto {
+  @ApiProperty({
+    description: '用户信息',
+    type: UserInfoDto
+  })
+  user: UserInfoDto;
+
+  @ApiProperty({
+    description: '访问令牌',
+    example: 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...'
+  })
+  access_token: string;
+
+  @ApiProperty({
+    description: '刷新令牌',
+    example: 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...',
+    required: false
+  })
+  refresh_token?: string;
+
+  @ApiProperty({
+    description: '是否为新用户',
+    example: false,
+    required: false
+  })
+  is_new_user?: boolean;
+
+  @ApiProperty({
+    description: '响应消息',
+    example: '登录成功'
+  })
+  message: string;
+}
+
+/**
+ * 登录响应DTO
+ */
+export class LoginResponseDto {
+  @ApiProperty({
+    description: '请求是否成功',
+    example: true
+  })
+  success: boolean;
+
+  @ApiProperty({
+    description: '响应数据',
+    type: LoginResponseDataDto,
+    required: false
+  })
+  data?: LoginResponseDataDto;
+
+  @ApiProperty({
+    description: '响应消息',
+    example: '登录成功'
+  })
+  message: string;
+
+  @ApiProperty({
+    description: '错误代码',
+    example: 'LOGIN_FAILED',
+    required: false
+  })
+  error_code?: string;
+}
+
+/**
+ * 注册响应DTO
+ */
+export class RegisterResponseDto {
+  @ApiProperty({
+    description: '请求是否成功',
+    example: true
+  })
+  success: boolean;
+
+  @ApiProperty({
+    description: '响应数据',
+    type: LoginResponseDataDto,
+    required: false
+  })
+  data?: LoginResponseDataDto;
+
+  @ApiProperty({
+    description: '响应消息',
+    example: '注册成功'
+  })
+  message: string;
+
+  @ApiProperty({
+    description: '错误代码',
+    example: 'REGISTER_FAILED',
+    required: false
+  })
+  error_code?: string;
+}
+
+/**
+ * GitHub OAuth响应DTO
+ */
+export class GitHubOAuthResponseDto {
+  @ApiProperty({
+    description: '请求是否成功',
+    example: true
+  })
+  success: boolean;
+
+  @ApiProperty({
+    description: '响应数据',
+    type: LoginResponseDataDto,
+    required: false
+  })
+  data?: LoginResponseDataDto;
+
+  @ApiProperty({
+    description: '响应消息',
+    example: 'GitHub登录成功'
+  })
+  message: string;
+
+  @ApiProperty({
+    description: '错误代码',
+    example: 'GITHUB_OAUTH_FAILED',
+    required: false
+  })
+  error_code?: string;
+}
+
+/**
+ * 忘记密码响应数据DTO
+ */
+export class ForgotPasswordResponseDataDto {
+  @ApiProperty({
+    description: '验证码（仅用于演示，实际应用中不应返回）',
+    example: '123456',
+    required: false
+  })
+  verification_code?: string;
+
+  @ApiProperty({
+    description: '是否为测试模式',
+    example: true,
+    required: false
+  })
+  is_test_mode?: boolean;
+}
+
+/**
+ * 忘记密码响应DTO
+ */
+export class ForgotPasswordResponseDto {
+  @ApiProperty({
+    description: '请求是否成功',
+    example: false,
+    examples: {
+      success: {
+        summary: '真实发送成功',
+        value: true
+      },
+      testMode: {
+        summary: '测试模式',
+        value: false
+      }
+    }
+  })
+  success: boolean;
+
+  @ApiProperty({
+    description: '响应数据',
+    type: ForgotPasswordResponseDataDto,
+    required: false,
+    examples: {
+      success: {
+        summary: '真实发送成功',
+        value: {
+          verification_code: '123456',
+          is_test_mode: false
+        }
+      },
+      testMode: {
+        summary: '测试模式',
+        value: {
+          verification_code: '059174',
+          is_test_mode: true
+        }
+      }
+    }
+  })
+  data?: ForgotPasswordResponseDataDto;
+
+  @ApiProperty({
+    description: '响应消息',
+    example: '⚠️ 测试模式：验证码已生成但未真实发送。请在控制台查看验证码，或配置邮件服务以启用真实发送。',
+    examples: {
+      success: {
+        summary: '真实发送成功',
+        value: '验证码已发送，请查收'
+      },
+      testMode: {
+        summary: '测试模式',
+        value: '⚠️ 测试模式：验证码已生成但未真实发送。请在控制台查看验证码，或配置邮件服务以启用真实发送。'
+      }
+    }
+  })
+  message: string;
+
+  @ApiProperty({
+    description: '错误代码',
+    example: 'TEST_MODE_ONLY',
+    examples: {
+      success: {
+        summary: '真实发送成功',
+        value: null
+      },
+      testMode: {
+        summary: '测试模式',
+        value: 'TEST_MODE_ONLY'
+      },
+      failed: {
+        summary: '发送失败',
+        value: 'SEND_CODE_FAILED'
+      }
+    },
+    required: false
+  })
+  error_code?: string;
+}
+
+/**
+ * 通用响应DTO（用于重置密码、修改密码等）
+ */
+export class CommonResponseDto {
+  @ApiProperty({
+    description: '请求是否成功',
+    example: true
+  })
+  success: boolean;
+
+  @ApiProperty({
+    description: '响应消息',
+    example: '操作成功'
+  })
+  message: string;
+
+  @ApiProperty({
+    description: '错误代码',
+    example: 'OPERATION_FAILED',
+    required: false
+  })
+  error_code?: string;
+}
+
+/**
+ * 测试模式邮件验证码响应DTO by angjustinl 2025-12-17
+ */
+export class TestModeEmailVerificationResponseDto {
+  @ApiProperty({
+    description: '请求是否成功（测试模式下为false）',
+    example: false
+  })
+  success: boolean;
+
+  @ApiProperty({
+    description: '响应数据',
+    example: {
+      verification_code: '059174',
+      is_test_mode: true
+    }
+  })
+  data: {
+    verification_code: string;
+    is_test_mode: boolean;
+  };
+
+  @ApiProperty({
+    description: '响应消息',
+    example: '⚠️ 测试模式：验证码已生成但未真实发送。请在控制台查看验证码，或配置邮件服务以启用真实发送。'
+  })
+  message: string;
+
+  @ApiProperty({
+    description: '错误代码',
+    example: 'TEST_MODE_ONLY'
+  })
+  error_code: string;
+}
+
+/**
+ * 成功发送邮件验证码响应DTO
+ */
+export class SuccessEmailVerificationResponseDto {
+  @ApiProperty({
+    description: '请求是否成功',
+    example: true
+  })
+  success: boolean;
+
+  @ApiProperty({
+    description: '响应数据',
+    example: {
+      verification_code: '123456',
+      is_test_mode: false
+    }
+  })
+  data: {
+    verification_code: string;
+    is_test_mode: boolean;
+  };
+
+  @ApiProperty({
+    description: '响应消息',
+    example: '验证码已发送，请查收'
+  })
+  message: string;
+
+  @ApiProperty({
+    description: '错误代码',
+    example: null,
+    required: false
+  })
+  error_code?: string;
+}
\ No newline at end of file
diff --git a/src/business/auth/index.ts b/src/business/auth/index.ts
new file mode 100644
index 0000000..c4530d4
--- /dev/null
+++ b/src/business/auth/index.ts
@@ -0,0 +1,23 @@
+/**
+ * 用户认证业务模块导出
+ * 
+ * 功能概述：
+ * - 用户登录和注册
+ * - GitHub OAuth集成
+ * - 密码管理（忘记密码、重置密码、修改密码）
+ * - 邮箱验证功能
+ * - JWT Token管理
+ */
+
+// 模块
+export * from './auth.module';
+
+// 控制器
+export * from './controllers/login.controller';
+
+// 服务
+export * from './services/login.service';
+
+// DTO
+export * from './dto/login.dto';
+export * from './dto/login_response.dto';
\ No newline at end of file
diff --git a/src/business/login/login.service.ts b/src/business/auth/services/login.service.ts
similarity index 98%
rename from src/business/login/login.service.ts
rename to src/business/auth/services/login.service.ts
index 6c23fe4..d354032 100644
--- a/src/business/login/login.service.ts
+++ b/src/business/auth/services/login.service.ts
@@ -17,8 +17,8 @@
  */
 
 import { Injectable, Logger } from '@nestjs/common';
-import { LoginCoreService, LoginRequest, RegisterRequest, GitHubOAuthRequest, PasswordResetRequest, AuthResult } from '../../core/login_core/login_core.service';
-import { Users } from '../../core/db/users/users.entity';
+import { LoginCoreService, LoginRequest, RegisterRequest, GitHubOAuthRequest, PasswordResetRequest, AuthResult } from '../../../core/login_core/login_core.service';
+import { Users } from '../../../core/db/users/users.entity';
 
 /**
  * 登录响应数据接口
diff --git a/src/business/login/login.module.ts b/src/business/login/login.module.ts
deleted file mode 100644
index be1dd78..0000000
--- a/src/business/login/login.module.ts
+++ /dev/null
@@ -1,25 +0,0 @@
-/**
- * 登录业务模块
- * 
- * 功能描述：
- * - 整合登录相关的控制器、服务和依赖
- * - 提供完整的登录业务功能模块
- * - 可被其他模块导入使用
- * 
- * @author moyin
- * @version 1.0.0
- * @since 2025-12-17
- */
-
-import { Module } from '@nestjs/common';
-import { LoginController } from './login.controller';
-import { LoginService } from './login.service';
-import { LoginCoreModule } from '../../core/login_core/login_core.module';
-
-@Module({
-  imports: [LoginCoreModule],
-  controllers: [LoginController],
-  providers: [LoginService],
-  exports: [LoginService],
-})
-export class LoginModule {}
\ No newline at end of file
diff --git a/src/business/login/login.service.spec.ts b/src/business/login/login.service.spec.ts
deleted file mode 100644
index e1495e3..0000000
--- a/src/business/login/login.service.spec.ts
+++ /dev/null
@@ -1,193 +0,0 @@
-/**
- * 登录业务服务测试
- */
-
-import { Test, TestingModule } from '@nestjs/testing';
-import { LoginService } from './login.service';
-import { LoginCoreService } from '../../core/login_core/login_core.service';
-
-describe('LoginService', () => {
-  let service: LoginService;
-  let loginCoreService: jest.Mocked<LoginCoreService>;
-
-  const mockUser = {
-    id: BigInt(1),
-    username: 'testuser',
-    email: 'test@example.com',
-    phone: '+8613800138000',
-    password_hash: '$2b$12$hashedpassword',
-    nickname: '测试用户',
-    github_id: null as string | null,
-    avatar_url: null as string | null,
-    role: 1,
-    email_verified: false,
-    created_at: new Date(),
-    updated_at: new Date()
-  };
-
-  beforeEach(async () => {
-    const mockLoginCoreService = {
-      login: jest.fn(),
-      register: jest.fn(),
-      githubOAuth: jest.fn(),
-      sendPasswordResetCode: jest.fn(),
-      resetPassword: jest.fn(),
-      changePassword: jest.fn(),
-    };
-
-    const module: TestingModule = await Test.createTestingModule({
-      providers: [
-        LoginService,
-        {
-          provide: LoginCoreService,
-          useValue: mockLoginCoreService,
-        },
-      ],
-    }).compile();
-
-    service = module.get<LoginService>(LoginService);
-    loginCoreService = module.get(LoginCoreService);
-  });
-
-  it('should be defined', () => {
-    expect(service).toBeDefined();
-  });
-
-  describe('login', () => {
-    it('should return success response for valid login', async () => {
-      loginCoreService.login.mockResolvedValue({
-        user: mockUser,
-        isNewUser: false
-      });
-
-      const result = await service.login({
-        identifier: 'testuser',
-        password: 'password123'
-      });
-
-      expect(result.success).toBe(true);
-      expect(result.data?.user.username).toBe('testuser');
-      expect(result.data?.access_token).toBeDefined();
-    });
-
-    it('should return error response for failed login', async () => {
-      loginCoreService.login.mockRejectedValue(new Error('登录失败'));
-
-      const result = await service.login({
-        identifier: 'testuser',
-        password: 'wrongpassword'
-      });
-
-      expect(result.success).toBe(false);
-      expect(result.message).toBe('登录失败');
-      expect(result.error_code).toBe('LOGIN_FAILED');
-    });
-  });
-
-  describe('register', () => {
-    it('should return success response for valid registration', async () => {
-      loginCoreService.register.mockResolvedValue({
-        user: mockUser,
-        isNewUser: true
-      });
-
-      const result = await service.register({
-        username: 'testuser',
-        password: 'password123',
-        nickname: '测试用户'
-      });
-
-      expect(result.success).toBe(true);
-      expect(result.data?.user.username).toBe('testuser');
-      expect(result.data?.is_new_user).toBe(true);
-    });
-
-    it('should return error response for failed registration', async () => {
-      loginCoreService.register.mockRejectedValue(new Error('用户名已存在'));
-
-      const result = await service.register({
-        username: 'existinguser',
-        password: 'password123',
-        nickname: '测试用户'
-      });
-
-      expect(result.success).toBe(false);
-      expect(result.message).toBe('用户名已存在');
-      expect(result.error_code).toBe('REGISTER_FAILED');
-    });
-  });
-
-  describe('githubOAuth', () => {
-    it('should return success response for GitHub OAuth', async () => {
-      loginCoreService.githubOAuth.mockResolvedValue({
-        user: mockUser,
-        isNewUser: true
-      });
-
-      const result = await service.githubOAuth({
-        github_id: 'github123',
-        username: 'githubuser',
-        nickname: 'GitHub用户'
-      });
-
-      expect(result.success).toBe(true);
-      expect(result.data?.user.username).toBe('testuser');
-      expect(result.data?.is_new_user).toBe(true);
-    });
-  });
-
-  describe('sendPasswordResetCode', () => {
-    it('should return test mode response with verification code', async () => {
-      loginCoreService.sendPasswordResetCode.mockResolvedValue({
-        code: '123456',
-        isTestMode: true
-      });
-
-      const result = await service.sendPasswordResetCode('test@example.com');
-
-      expect(result.success).toBe(false); // 测试模式下不算成功
-      expect(result.error_code).toBe('TEST_MODE_ONLY');
-      expect(result.data?.verification_code).toBe('123456');
-      expect(result.data?.is_test_mode).toBe(true);
-    });
-
-    it('should return success response for real email sending', async () => {
-      loginCoreService.sendPasswordResetCode.mockResolvedValue({
-        code: '123456',
-        isTestMode: false
-      });
-
-      const result = await service.sendPasswordResetCode('test@example.com');
-
-      expect(result.success).toBe(true);
-      expect(result.data?.is_test_mode).toBe(false);
-      expect(result.data?.verification_code).toBeUndefined(); // 真实模式下不返回验证码
-    });
-  });
-
-  describe('resetPassword', () => {
-    it('should return success response for password reset', async () => {
-      loginCoreService.resetPassword.mockResolvedValue(mockUser);
-
-      const result = await service.resetPassword({
-        identifier: 'test@example.com',
-        verificationCode: '123456',
-        newPassword: 'newpassword123'
-      });
-
-      expect(result.success).toBe(true);
-      expect(result.message).toBe('密码重置成功');
-    });
-  });
-
-  describe('changePassword', () => {
-    it('should return success response for password change', async () => {
-      loginCoreService.changePassword.mockResolvedValue(mockUser);
-
-      const result = await service.changePassword(BigInt(1), 'oldpassword', 'newpassword123');
-
-      expect(result.success).toBe(true);
-      expect(result.message).toBe('密码修改成功');
-    });
-  });
-});
\ No newline at end of file
diff --git a/src/business/security/decorators/throttle.decorator.ts b/src/business/security/decorators/throttle.decorator.ts
new file mode 100644
index 0000000..1c6b5ee
--- /dev/null
+++ b/src/business/security/decorators/throttle.decorator.ts
@@ -0,0 +1,89 @@
+/**
+ * 频率限制装饰器
+ * 
+ * 功能描述：
+ * - 提供API接口的频率限制功能
+ * - 防止恶意请求和系统滥用
+ * - 支持基于IP和用户的限制策略
+ * 
+ * 使用场景：
+ * - 登录接口防暴力破解
+ * - 注册接口防批量注册
+ * - 验证码接口防频繁发送
+ * - 敏感操作接口保护
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import { SetMetadata, applyDecorators, UseGuards } from '@nestjs/common';
+import { ThrottleGuard } from '../guards/throttle.guard';
+
+/**
+ * 频率限制元数据键
+ */
+export const THROTTLE_KEY = 'throttle';
+
+/**
+ * 频率限制配置接口
+ */
+export interface ThrottleConfig {
+  /** 时间窗口内允许的最大请求次数 */
+  limit: number;
+  /** 时间窗口长度（秒） */
+  ttl: number;
+  /** 限制类型：ip（基于IP）或 user（基于用户） */
+  type?: 'ip' | 'user';
+  /** 自定义错误消息 */
+  message?: string;
+}
+
+/**
+ * 频率限制装饰器
+ * 
+ * @param config 频率限制配置
+ * @returns 装饰器函数
+ * 
+ * @example
+ * ```typescript
+ * // 每分钟最多5次登录尝试
+ * @Throttle({ limit: 5, ttl: 60, message: '登录尝试过于频繁，请稍后再试' })
+ * @Post('login')
+ * async login() { ... }
+ * 
+ * // 每5分钟最多3次注册
+ * @Throttle({ limit: 3, ttl: 300, type: 'ip' })
+ * @Post('register')
+ * async register() { ... }
+ * ```
+ */
+export function Throttle(config: ThrottleConfig) {
+  return applyDecorators(
+    SetMetadata(THROTTLE_KEY, config),
+    UseGuards(ThrottleGuard)
+  );
+}
+
+/**
+ * 预定义的频率限制配置
+ */
+export const ThrottlePresets = {
+  /** 登录接口：每分钟5次 */
+  LOGIN: { limit: 5, ttl: 60, message: '登录尝试过于频繁，请1分钟后再试' },
+  
+  /** 注册接口：每5分钟3次 */
+  REGISTER: { limit: 3, ttl: 300, message: '注册请求过于频繁，请5分钟后再试' },
+  
+  /** 发送验证码：每分钟1次 */
+  SEND_CODE: { limit: 1, ttl: 60, message: '验证码发送过于频繁，请1分钟后再试' },
+  
+  /** 密码重置：每小时3次 */
+  RESET_PASSWORD: { limit: 3, ttl: 3600, message: '密码重置请求过于频繁，请1小时后再试' },
+  
+  /** 管理员操作：每分钟10次 */
+  ADMIN_OPERATION: { limit: 10, ttl: 60, message: '管理员操作过于频繁，请稍后再试' },
+  
+  /** 一般API：每分钟30次 */
+  GENERAL_API: { limit: 30, ttl: 60, message: 'API调用过于频繁，请稍后再试' }
+} as const;
\ No newline at end of file
diff --git a/src/business/security/decorators/timeout.decorator.ts b/src/business/security/decorators/timeout.decorator.ts
new file mode 100644
index 0000000..0b3dd10
--- /dev/null
+++ b/src/business/security/decorators/timeout.decorator.ts
@@ -0,0 +1,119 @@
+/**
+ * 超时处理装饰器
+ * 
+ * 功能描述：
+ * - 为API接口添加超时控制
+ * - 防止长时间运行的请求阻塞系统
+ * - 提供友好的超时错误提示
+ * 
+ * 使用场景：
+ * - 数据库查询超时控制
+ * - 外部API调用超时
+ * - 文件上传下载超时
+ * - 复杂计算任务超时
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import { SetMetadata, applyDecorators } from '@nestjs/common';
+import { ApiResponse } from '@nestjs/swagger';
+
+/**
+ * 超时配置元数据键
+ */
+export const TIMEOUT_KEY = 'timeout';
+
+/**
+ * 超时配置接口
+ */
+export interface TimeoutConfig {
+  /** 超时时间（毫秒） */
+  timeout: number;
+  /** 自定义超时错误消息 */
+  message?: string;
+  /** 是否记录超时日志 */
+  logTimeout?: boolean;
+}
+
+/**
+ * 超时装饰器
+ * 
+ * @param config 超时配置或超时时间（毫秒）
+ * @returns 装饰器函数
+ * 
+ * @example
+ * ```typescript
+ * // 设置30秒超时
+ * @Timeout(30000)
+ * @Get('slow-operation')
+ * async slowOperation() { ... }
+ * 
+ * // 自定义超时配置
+ * @Timeout({ 
+ *   timeout: 60000, 
+ *   message: '数据查询超时，请稍后重试',
+ *   logTimeout: true 
+ * })
+ * @Post('complex-query')
+ * async complexQuery() { ... }
+ * ```
+ */
+export function Timeout(config: number | TimeoutConfig) {
+  const timeoutConfig: TimeoutConfig = typeof config === 'number' 
+    ? { timeout: config }
+    : config;
+
+  return applyDecorators(
+    SetMetadata(TIMEOUT_KEY, timeoutConfig),
+    ApiResponse({
+      status: 408,
+      description: timeoutConfig.message || '请求超时',
+      schema: {
+        type: 'object',
+        properties: {
+          success: { type: 'boolean', example: false },
+          message: { type: 'string', example: timeoutConfig.message || '请求超时，请稍后重试' },
+          error_code: { type: 'string', example: 'REQUEST_TIMEOUT' },
+          timeout_info: {
+            type: 'object',
+            properties: {
+              timeout_ms: { type: 'number', example: timeoutConfig.timeout },
+              timestamp: { type: 'string', example: '2025-12-24T10:00:00.000Z' }
+            }
+          }
+        }
+      }
+    })
+  );
+}
+
+/**
+ * 预定义的超时配置
+ */
+export const TimeoutPresets = {
+  /** 快速操作：5秒 */
+  FAST: { timeout: 5000, message: '操作超时，请检查网络连接' },
+  
+  /** 一般操作：30秒 */
+  NORMAL: { timeout: 30000, message: '请求超时，请稍后重试' },
+  
+  /** 慢操作：60秒 */
+  SLOW: { timeout: 60000, message: '操作超时，请稍后重试' },
+  
+  /** 文件操作：2分钟 */
+  FILE_OPERATION: { timeout: 120000, message: '文件操作超时，请检查文件大小和网络状况' },
+  
+  /** 数据库查询：45秒 */
+  DATABASE_QUERY: { timeout: 45000, message: '数据查询超时，请简化查询条件或稍后重试' },
+  
+  /** 外部API调用：15秒 */
+  EXTERNAL_API: { timeout: 15000, message: '外部服务调用超时，请稍后重试' },
+  
+  /** 邮件发送：30秒 */
+  EMAIL_SEND: { timeout: 30000, message: '邮件发送超时，请检查邮件服务配置' },
+  
+  /** 长时间任务：5分钟 */
+  LONG_TASK: { timeout: 300000, message: '任务执行超时，请稍后重试' }
+} as const;
\ No newline at end of file
diff --git a/src/business/security/guards/throttle.guard.ts b/src/business/security/guards/throttle.guard.ts
new file mode 100644
index 0000000..7d9cb5e
--- /dev/null
+++ b/src/business/security/guards/throttle.guard.ts
@@ -0,0 +1,317 @@
+/**
+ * 频率限制守卫
+ * 
+ * 功能描述：
+ * - 实现API接口的频率限制功能
+ * - 基于IP地址进行限制
+ * - 支持自定义限制规则
+ * 
+ * 使用场景：
+ * - 防止API滥用
+ * - 登录暴力破解防护
+ * - 验证码发送频率控制
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import {
+  Injectable,
+  CanActivate,
+  ExecutionContext,
+  HttpException,
+  HttpStatus,
+  Logger
+} from '@nestjs/common';
+import { Reflector } from '@nestjs/core';
+import { Request } from 'express';
+import { THROTTLE_KEY, ThrottleConfig } from '../decorators/throttle.decorator';
+
+/**
+ * 频率限制记录接口
+ */
+interface ThrottleRecord {
+  /** 请求次数 */
+  count: number;
+  /** 窗口开始时间 */
+  windowStart: number;
+  /** 最后请求时间 */
+  lastRequest: number;
+}
+
+/**
+ * 频率限制响应接口
+ */
+interface ThrottleResponse {
+  /** 请求是否成功 */
+  success: boolean;
+  /** 响应消息 */
+  message: string;
+  /** 错误代码 */
+  error_code: string;
+  /** 限制信息 */
+  throttle_info: {
+    /** 限制次数 */
+    limit: number;
+    /** 时间窗口（秒） */
+    window_seconds: number;
+    /** 当前请求次数 */
+    current_requests: number;
+    /** 重置时间 */
+    reset_time: string;
+  };
+}
+
+@Injectable()
+export class ThrottleGuard implements CanActivate {
+  private readonly logger = new Logger(ThrottleGuard.name);
+  
+  /**
+   * 存储频率限制记录
+   * Key: IP地址 + 路径
+   * Value: 限制记录
+   */
+  private readonly records = new Map<string, ThrottleRecord>();
+
+  /**
+   * 清理过期记录的间隔（毫秒）
+   */
+  private readonly cleanupInterval = 60000; // 1分钟
+
+  constructor(private readonly reflector: Reflector) {
+    // 启动定期清理任务
+    this.startCleanupTask();
+  }
+
+  /**
+   * 守卫检查函数
+   * 
+   * @param context 执行上下文
+   * @returns 是否允许通过
+   */
+  async canActivate(context: ExecutionContext): Promise<boolean> {
+    // 1. 获取频率限制配置
+    const throttleConfig = this.getThrottleConfig(context);
+    
+    if (!throttleConfig) {
+      // 没有配置频率限制，直接通过
+      return true;
+    }
+
+    // 2. 获取请求信息
+    const request = context.switchToHttp().getRequest<Request>();
+    const key = this.generateKey(request, throttleConfig);
+    
+    // 3. 检查频率限制
+    const isAllowed = this.checkThrottle(key, throttleConfig);
+    
+    if (!isAllowed) {
+      // 4. 记录被限制的请求
+      this.logger.warn('请求被频率限制', {
+        operation: 'throttle_limit',
+        method: request.method,
+        url: request.url,
+        ip: request.ip,
+        userAgent: request.get('User-Agent'),
+        limit: throttleConfig.limit,
+        ttl: throttleConfig.ttl,
+        timestamp: new Date().toISOString()
+      });
+
+      // 5. 抛出频率限制异常
+      const record = this.records.get(key);
+      const resetTime = new Date(record!.windowStart + throttleConfig.ttl * 1000);
+      
+      const response: ThrottleResponse = {
+        success: false,
+        message: throttleConfig.message || '请求过于频繁，请稍后再试',
+        error_code: 'TOO_MANY_REQUESTS',
+        throttle_info: {
+          limit: throttleConfig.limit,
+          window_seconds: throttleConfig.ttl,
+          current_requests: record!.count,
+          reset_time: resetTime.toISOString()
+        }
+      };
+
+      throw new HttpException(response, HttpStatus.TOO_MANY_REQUESTS);
+    }
+
+    return true;
+  }
+
+  /**
+   * 获取频率限制配置
+   * 
+   * @param context 执行上下文
+   * @returns 频率限制配置或null
+   */
+  private getThrottleConfig(context: ExecutionContext): ThrottleConfig | null {
+    // 从方法装饰器获取配置
+    const methodConfig = this.reflector.get<ThrottleConfig>(
+      THROTTLE_KEY,
+      context.getHandler()
+    );
+
+    if (methodConfig) {
+      return methodConfig;
+    }
+
+    // 从类装饰器获取配置
+    const classConfig = this.reflector.get<ThrottleConfig>(
+      THROTTLE_KEY,
+      context.getClass()
+    );
+
+    return classConfig || null;
+  }
+
+  /**
+   * 生成限制键
+   * 
+   * @param request 请求对象
+   * @param config 频率限制配置
+   * @returns 限制键
+   */
+  private generateKey(request: Request, config: ThrottleConfig): string {
+    const ip = request.ip || 'unknown';
+    const path = request.route?.path || request.url;
+    const method = request.method;
+    
+    // 根据限制类型生成不同的键
+    if (config.type === 'user') {
+      // 基于用户的限制（需要从JWT中获取用户ID）
+      const userId = this.extractUserId(request);
+      return `user:${userId}:${method}:${path}`;
+    } else {
+      // 基于IP的限制（默认）
+      return `ip:${ip}:${method}:${path}`;
+    }
+  }
+
+  /**
+   * 检查频率限制
+   * 
+   * @param key 限制键
+   * @param config 频率限制配置
+   * @returns 是否允许通过
+   */
+  private checkThrottle(key: string, config: ThrottleConfig): boolean {
+    const now = Date.now();
+    const windowMs = config.ttl * 1000;
+    
+    let record = this.records.get(key);
+    
+    if (!record) {
+      // 第一次请求
+      this.records.set(key, {
+        count: 1,
+        windowStart: now,
+        lastRequest: now
+      });
+      return true;
+    }
+
+    // 检查是否需要重置窗口
+    if (now - record.windowStart >= windowMs) {
+      // 重置窗口
+      record.count = 1;
+      record.windowStart = now;
+      record.lastRequest = now;
+      return true;
+    }
+
+    // 在当前窗口内
+    if (record.count >= config.limit) {
+      // 超过限制
+      return false;
+    }
+
+    // 增加计数
+    record.count++;
+    record.lastRequest = now;
+    return true;
+  }
+
+  /**
+   * 从请求中提取用户ID
+   * 
+   * @param request 请求对象
+   * @returns 用户ID
+   */
+  private extractUserId(request: Request): string {
+    // 这里应该从JWT token中提取用户ID
+    // 简化实现，使用IP作为fallback
+    const authHeader = request.get('Authorization');
+    if (authHeader && authHeader.startsWith('Bearer ')) {
+      try {
+        // 这里应该解析JWT token获取用户ID
+        // 简化实现，返回token的hash
+        const token = authHeader.substring(7);
+        return Buffer.from(token).toString('base64').substring(0, 10);
+      } catch (error) {
+        // JWT解析失败，使用IP
+        return request.ip || 'unknown';
+      }
+    }
+    
+    return request.ip || 'unknown';
+  }
+
+  /**
+   * 启动清理任务
+   */
+  private startCleanupTask(): void {
+    setInterval(() => {
+      this.cleanupExpiredRecords();
+    }, this.cleanupInterval);
+  }
+
+  /**
+   * 清理过期记录
+   */
+  private cleanupExpiredRecords(): void {
+    const now = Date.now();
+    const maxAge = 3600000; // 1小时
+    
+    for (const [key, record] of this.records.entries()) {
+      if (now - record.lastRequest > maxAge) {
+        this.records.delete(key);
+      }
+    }
+  }
+
+  /**
+   * 获取当前记录统计
+   * 
+   * @returns 记录统计信息
+   */
+  getStats() {
+    return {
+      totalRecords: this.records.size,
+      records: Array.from(this.records.entries()).map(([key, record]) => ({
+        key,
+        count: record.count,
+        windowStart: new Date(record.windowStart).toISOString(),
+        lastRequest: new Date(record.lastRequest).toISOString()
+      }))
+    };
+  }
+
+  /**
+   * 清除所有记录
+   */
+  clearAllRecords(): void {
+    this.records.clear();
+  }
+
+  /**
+   * 清除指定键的记录
+   * 
+   * @param key 限制键
+   */
+  clearRecord(key: string): void {
+    this.records.delete(key);
+  }
+}
\ No newline at end of file
diff --git a/src/business/security/index.ts b/src/business/security/index.ts
new file mode 100644
index 0000000..1453eb8
--- /dev/null
+++ b/src/business/security/index.ts
@@ -0,0 +1,27 @@
+/**
+ * 安全功能模块导出
+ * 
+ * 功能概述：
+ * - 频率限制和防护机制
+ * - 请求超时控制
+ * - 维护模式管理
+ * - 内容类型验证
+ * - 系统安全中间件
+ */
+
+// 模块
+export * from './security.module';
+
+// 守卫
+export * from './guards/throttle.guard';
+
+// 中间件
+export * from './middleware/maintenance.middleware';
+export * from './middleware/content-type.middleware';
+
+// 拦截器
+export * from './interceptors/timeout.interceptor';
+
+// 装饰器
+export * from './decorators/throttle.decorator';
+export * from './decorators/timeout.decorator';
\ No newline at end of file
diff --git a/src/business/security/interceptors/timeout.interceptor.ts b/src/business/security/interceptors/timeout.interceptor.ts
new file mode 100644
index 0000000..3e62958
--- /dev/null
+++ b/src/business/security/interceptors/timeout.interceptor.ts
@@ -0,0 +1,179 @@
+/**
+ * 超时拦截器
+ * 
+ * 功能描述：
+ * - 实现API接口的超时控制逻辑
+ * - 在超时时自动取消请求并返回错误
+ * - 记录超时事件的详细日志
+ * 
+ * 使用场景：
+ * - 全局超时控制
+ * - 防止资源泄漏
+ * - 提升系统稳定性
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import {
+  Injectable,
+  NestInterceptor,
+  ExecutionContext,
+  CallHandler,
+  RequestTimeoutException,
+  Logger
+} from '@nestjs/common';
+import { Reflector } from '@nestjs/core';
+import { Observable, throwError, TimeoutError } from 'rxjs';
+import { catchError, timeout } from 'rxjs/operators';
+import { TIMEOUT_KEY, TimeoutConfig } from '../decorators/timeout.decorator';
+
+/**
+ * 超时响应接口
+ */
+interface TimeoutResponse {
+  /** 请求是否成功 */
+  success: boolean;
+  /** 响应消息 */
+  message: string;
+  /** 错误代码 */
+  error_code: string;
+  /** 超时信息 */
+  timeout_info: {
+    /** 超时时间（毫秒） */
+    timeout_ms: number;
+    /** 超时发生时间 */
+    timestamp: string;
+  };
+}
+
+@Injectable()
+export class TimeoutInterceptor implements NestInterceptor {
+  private readonly logger = new Logger(TimeoutInterceptor.name);
+
+  constructor(private readonly reflector: Reflector) {}
+
+  /**
+   * 拦截器处理函数
+   * 
+   * 业务逻辑：
+   * 1. 获取超时配置
+   * 2. 应用超时控制
+   * 3. 处理超时异常
+   * 4. 记录超时日志
+   * 
+   * @param context 执行上下文
+   * @param next 调用处理器
+   * @returns 可观察对象
+   */
+  intercept(context: ExecutionContext, next: CallHandler): Observable<any> {
+    // 1. 获取超时配置
+    const timeoutConfig = this.getTimeoutConfig(context);
+    
+    if (!timeoutConfig) {
+      // 没有配置超时，直接执行
+      return next.handle();
+    }
+
+    // 2. 获取请求信息用于日志记录
+    const request = context.switchToHttp().getRequest();
+    const startTime = Date.now();
+
+    // 3. 应用超时控制
+    return next.handle().pipe(
+      timeout(timeoutConfig.timeout),
+      catchError((error) => {
+        if (error instanceof TimeoutError) {
+          // 4. 处理超时异常
+          const duration = Date.now() - startTime;
+          
+          // 5. 记录超时日志
+          if (timeoutConfig.logTimeout !== false) {
+            this.logger.warn('请求超时', {
+              operation: 'request_timeout',
+              method: request.method,
+              url: request.url,
+              timeout_ms: timeoutConfig.timeout,
+              actual_duration_ms: duration,
+              userAgent: request.get('User-Agent'),
+              ip: request.ip,
+              timestamp: new Date().toISOString()
+            });
+          }
+
+          // 6. 构建超时响应
+          const timeoutResponse: TimeoutResponse = {
+            success: false,
+            message: timeoutConfig.message || '请求超时，请稍后重试',
+            error_code: 'REQUEST_TIMEOUT',
+            timeout_info: {
+              timeout_ms: timeoutConfig.timeout,
+              timestamp: new Date().toISOString()
+            }
+          };
+
+          // 7. 抛出超时异常
+          return throwError(() => new RequestTimeoutException(timeoutResponse));
+        }
+
+        // 其他异常直接抛出
+        return throwError(() => error);
+      })
+    );
+  }
+
+  /**
+   * 获取超时配置
+   * 
+   * @param context 执行上下文
+   * @returns 超时配置或null
+   */
+  private getTimeoutConfig(context: ExecutionContext): TimeoutConfig | null {
+    // 从方法装饰器获取配置
+    const methodConfig = this.reflector.get<TimeoutConfig>(
+      TIMEOUT_KEY,
+      context.getHandler()
+    );
+
+    if (methodConfig) {
+      return methodConfig;
+    }
+
+    // 从类装饰器获取配置
+    const classConfig = this.reflector.get<TimeoutConfig>(
+      TIMEOUT_KEY,
+      context.getClass()
+    );
+
+    return classConfig || null;
+  }
+
+  /**
+   * 获取默认超时配置
+   * 
+   * @returns 默认超时配置
+   */
+  private getDefaultTimeoutConfig(): TimeoutConfig {
+    return {
+      timeout: 30000, // 默认30秒
+      message: '请求超时，请稍后重试',
+      logTimeout: true
+    };
+  }
+
+  /**
+   * 验证超时配置
+   * 
+   * @param config 超时配置
+   * @returns 是否有效
+   */
+  private isValidTimeoutConfig(config: TimeoutConfig): boolean {
+    return (
+      config &&
+      typeof config.timeout === 'number' &&
+      config.timeout > 0 &&
+      config.timeout <= 600000 // 最大10分钟
+    );
+  }
+}
\ No newline at end of file
diff --git a/src/business/security/middleware/content-type.middleware.ts b/src/business/security/middleware/content-type.middleware.ts
new file mode 100644
index 0000000..ce454dd
--- /dev/null
+++ b/src/business/security/middleware/content-type.middleware.ts
@@ -0,0 +1,224 @@
+/**
+ * 内容类型检查中间件
+ * 
+ * 功能描述：
+ * - 检查POST/PUT请求的Content-Type头
+ * - 确保API接口接收正确的数据格式
+ * - 提供友好的错误提示信息
+ * 
+ * 使用场景：
+ * - API接口数据格式验证
+ * - 防止错误的请求格式
+ * - 提升API接口的健壮性
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import { Injectable, NestMiddleware } from '@nestjs/common';
+import { Request, Response, NextFunction } from 'express';
+import { Logger } from '@nestjs/common';
+
+/**
+ * 不支持的媒体类型响应接口
+ */
+interface UnsupportedMediaTypeResponse {
+  /** 请求是否成功 */
+  success: boolean;
+  /** 响应消息 */
+  message: string;
+  /** 错误代码 */
+  error_code: string;
+  /** 支持的媒体类型 */
+  supported_types: string[];
+  /** 接收到的媒体类型 */
+  received_type?: string;
+}
+
+@Injectable()
+export class ContentTypeMiddleware implements NestMiddleware {
+  private readonly logger = new Logger(ContentTypeMiddleware.name);
+
+  /**
+   * 需要检查Content-Type的HTTP方法
+   */
+  private readonly methodsToCheck = ['POST', 'PUT', 'PATCH'];
+
+  /**
+   * 支持的Content-Type列表
+   */
+  private readonly supportedTypes = [
+    'application/json',
+    'application/json; charset=utf-8'
+  ];
+
+  /**
+   * 不需要检查Content-Type的路径（正则表达式）
+   */
+  private readonly excludePaths = [
+    /^\/api-docs/, // Swagger文档
+    /^\/health/, // 健康检查
+    /^\/admin\/logs\/archive/, // 文件下载
+    /\/upload/, // 文件上传
+  ];
+
+  /**
+   * 中间件处理函数
+   * 
+   * 业务逻辑：
+   * 1. 检查是否需要验证Content-Type
+   * 2. 获取请求的Content-Type头
+   * 3. 验证Content-Type是否支持
+   * 4. 记录不支持的请求类型
+   * 
+   * @param req HTTP请求对象
+   * @param res HTTP响应对象
+   * @param next 下一个中间件函数
+   */
+  use(req: Request, res: Response, next: NextFunction) {
+    // 1. 检查是否需要验证Content-Type
+    if (!this.shouldCheckContentType(req)) {
+      next();
+      return;
+    }
+
+    // 2. 获取请求的Content-Type
+    const contentType = req.get('Content-Type');
+    
+    // 3. 检查Content-Type是否存在
+    if (!contentType) {
+      this.logger.warn('请求缺少Content-Type头', {
+        operation: 'content_type_check',
+        method: req.method,
+        url: req.url,
+        userAgent: req.get('User-Agent'),
+        ip: req.ip,
+        timestamp: new Date().toISOString()
+      });
+
+      const response: UnsupportedMediaTypeResponse = {
+        success: false,
+        message: '请求缺少Content-Type头，请设置为application/json',
+        error_code: 'MISSING_CONTENT_TYPE',
+        supported_types: this.supportedTypes,
+        received_type: undefined
+      };
+
+      res.status(415).json(response);
+      return;
+    }
+
+    // 4. 验证Content-Type是否支持
+    const normalizedContentType = this.normalizeContentType(contentType);
+    
+    if (!this.isSupportedContentType(normalizedContentType)) {
+      this.logger.warn('不支持的Content-Type', {
+        operation: 'content_type_check',
+        method: req.method,
+        url: req.url,
+        contentType: contentType,
+        normalizedContentType: normalizedContentType,
+        userAgent: req.get('User-Agent'),
+        ip: req.ip,
+        timestamp: new Date().toISOString()
+      });
+
+      const response: UnsupportedMediaTypeResponse = {
+        success: false,
+        message: `不支持的Content-Type: ${contentType}，请使用application/json`,
+        error_code: 'UNSUPPORTED_MEDIA_TYPE',
+        supported_types: this.supportedTypes,
+        received_type: contentType
+      };
+
+      res.status(415).json(response);
+      return;
+    }
+
+    // 5. Content-Type验证通过，继续处理
+    next();
+  }
+
+  /**
+   * 检查是否需要验证Content-Type
+   * 
+   * @param req HTTP请求对象
+   * @returns 是否需要验证
+   */
+  private shouldCheckContentType(req: Request): boolean {
+    // 1. 检查HTTP方法
+    if (!this.methodsToCheck.includes(req.method)) {
+      return false;
+    }
+
+    // 2. 检查是否在排除路径中
+    const url = req.url;
+    for (const excludePattern of this.excludePaths) {
+      if (excludePattern.test(url)) {
+        return false;
+      }
+    }
+
+    // 3. 检查Content-Length，如果为0则不需要验证
+    const contentLength = req.get('Content-Length');
+    if (contentLength === '0') {
+      return false;
+    }
+
+    return true;
+  }
+
+  /**
+   * 标准化Content-Type
+   * 
+   * @param contentType 原始Content-Type
+   * @returns 标准化后的Content-Type
+   */
+  private normalizeContentType(contentType: string): string {
+    // 移除空格并转换为小写
+    return contentType.toLowerCase().trim();
+  }
+
+  /**
+   * 检查Content-Type是否支持
+   * 
+   * @param contentType 标准化的Content-Type
+   * @returns 是否支持
+   */
+  private isSupportedContentType(contentType: string): boolean {
+    // 检查是否以支持的类型开头
+    return this.supportedTypes.some(supportedType => 
+      contentType.startsWith(supportedType.toLowerCase())
+    );
+  }
+
+  /**
+   * 获取支持的Content-Type列表
+   * 
+   * @returns 支持的类型列表
+   */
+  getSupportedTypes(): string[] {
+    return [...this.supportedTypes];
+  }
+
+  /**
+   * 添加支持的Content-Type
+   * 
+   * @param contentType 要添加的Content-Type
+   */
+  addSupportedType(contentType: string): void {
+    if (!this.supportedTypes.includes(contentType)) {
+      this.supportedTypes.push(contentType);
+    }
+  }
+
+  /**
+   * 添加排除路径
+   * 
+   * @param pattern 路径正则表达式
+   */
+  addExcludePath(pattern: RegExp): void {
+    this.excludePaths.push(pattern);
+  }
+}
\ No newline at end of file
diff --git a/src/business/security/middleware/maintenance.middleware.ts b/src/business/security/middleware/maintenance.middleware.ts
new file mode 100644
index 0000000..1e2e9d7
--- /dev/null
+++ b/src/business/security/middleware/maintenance.middleware.ts
@@ -0,0 +1,137 @@
+/**
+ * 维护模式中间件
+ * 
+ * 功能描述：
+ * - 检查系统是否处于维护模式
+ * - 在维护期间阻止用户访问API
+ * - 提供维护状态和预计恢复时间信息
+ * 
+ * 使用场景：
+ * - 系统升级维护
+ * - 数据库迁移
+ * - 紧急故障修复
+ * - 定期维护窗口
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import { Injectable, NestMiddleware } from '@nestjs/common';
+import { Request, Response, NextFunction } from 'express';
+import { ConfigService } from '@nestjs/config';
+import { Logger } from '@nestjs/common';
+
+/**
+ * 维护模式响应接口
+ */
+interface MaintenanceResponse {
+  /** 请求是否成功 */
+  success: boolean;
+  /** 响应消息 */
+  message: string;
+  /** 错误代码 */
+  error_code: string;
+  /** 维护信息 */
+  maintenance_info?: {
+    /** 维护开始时间 */
+    start_time: string;
+    /** 预计结束时间 */
+    estimated_end_time?: string;
+    /** 重试间隔（秒） */
+    retry_after: number;
+    /** 维护原因 */
+    reason?: string;
+  };
+}
+
+@Injectable()
+export class MaintenanceMiddleware implements NestMiddleware {
+  private readonly logger = new Logger(MaintenanceMiddleware.name);
+
+  constructor(private readonly configService: ConfigService) {}
+
+  /**
+   * 中间件处理函数
+   * 
+   * 业务逻辑：
+   * 1. 检查维护模式环境变量
+   * 2. 如果处于维护模式，返回503状态码
+   * 3. 提供维护信息和重试建议
+   * 4. 记录维护期间的访问尝试
+   * 
+   * @param req HTTP请求对象
+   * @param res HTTP响应对象
+   * @param next 下一个中间件函数
+   */
+  use(req: Request, res: Response, next: NextFunction) {
+    // 1. 检查维护模式状态
+    const isMaintenanceMode = this.configService.get<string>('MAINTENANCE_MODE') === 'true';
+    
+    if (!isMaintenanceMode) {
+      // 非维护模式，继续处理请求
+      next();
+      return;
+    }
+
+    // 2. 记录维护期间的访问尝试
+    this.logger.warn('维护模式：拒绝访问请求', {
+      operation: 'maintenance_check',
+      method: req.method,
+      url: req.url,
+      userAgent: req.get('User-Agent'),
+      ip: req.ip,
+      timestamp: new Date().toISOString()
+    });
+
+    // 3. 获取维护配置信息
+    const maintenanceStartTime = this.configService.get<string>('MAINTENANCE_START_TIME') || new Date().toISOString();
+    const maintenanceEndTime = this.configService.get<string>('MAINTENANCE_END_TIME');
+    const maintenanceReason = this.configService.get<string>('MAINTENANCE_REASON') || '系统维护升级';
+    const retryAfter = this.configService.get<number>('MAINTENANCE_RETRY_AFTER') || 1800; // 默认30分钟
+
+    // 4. 构建维护模式响应
+    const maintenanceResponse: MaintenanceResponse = {
+      success: false,
+      message: '系统正在维护中，请稍后再试',
+      error_code: 'SERVICE_UNAVAILABLE',
+      maintenance_info: {
+        start_time: maintenanceStartTime,
+        estimated_end_time: maintenanceEndTime,
+        retry_after: retryAfter,
+        reason: maintenanceReason
+      }
+    };
+
+    // 5. 设置HTTP响应头
+    res.setHeader('Retry-After', retryAfter.toString());
+    res.setHeader('Content-Type', 'application/json');
+    
+    // 6. 返回503服务不可用状态
+    res.status(503).json(maintenanceResponse);
+  }
+
+  /**
+   * 检查维护模式是否启用
+   * 
+   * @returns 是否处于维护模式
+   */
+  isMaintenanceEnabled(): boolean {
+    return this.configService.get<string>('MAINTENANCE_MODE') === 'true';
+  }
+
+  /**
+   * 获取维护信息
+   * 
+   * @returns 维护配置信息
+   */
+  getMaintenanceInfo() {
+    return {
+      enabled: this.isMaintenanceEnabled(),
+      startTime: this.configService.get<string>('MAINTENANCE_START_TIME'),
+      endTime: this.configService.get<string>('MAINTENANCE_END_TIME'),
+      reason: this.configService.get<string>('MAINTENANCE_REASON'),
+      retryAfter: this.configService.get<number>('MAINTENANCE_RETRY_AFTER')
+    };
+  }
+}
\ No newline at end of file
diff --git a/src/business/security/security.module.ts b/src/business/security/security.module.ts
new file mode 100644
index 0000000..80cdd83
--- /dev/null
+++ b/src/business/security/security.module.ts
@@ -0,0 +1,37 @@
+/**
+ * 安全功能模块
+ * 
+ * 功能描述：
+ * - 整合所有安全相关功能
+ * - 频率限制和请求超时控制
+ * - 维护模式和内容类型验证
+ * - 系统安全防护机制
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import { Module } from '@nestjs/common';
+import { APP_GUARD, APP_INTERCEPTOR } from '@nestjs/core';
+import { ThrottleGuard } from './guards/throttle.guard';
+import { TimeoutInterceptor } from './interceptors/timeout.interceptor';
+
+@Module({
+  providers: [
+    ThrottleGuard,
+    TimeoutInterceptor,
+    // 全局频率限制守卫
+    {
+      provide: APP_GUARD,
+      useClass: ThrottleGuard,
+    },
+    // 全局超时拦截器
+    {
+      provide: APP_INTERCEPTOR,
+      useClass: TimeoutInterceptor,
+    },
+  ],
+  exports: [ThrottleGuard, TimeoutInterceptor],
+})
+export class SecurityModule {}
\ No newline at end of file
diff --git a/src/business/shared/dto/app-status.dto.ts b/src/business/shared/dto/app-status.dto.ts
new file mode 100644
index 0000000..498f5c5
--- /dev/null
+++ b/src/business/shared/dto/app-status.dto.ts
@@ -0,0 +1,72 @@
+/**
+ * 应用状态响应 DTO
+ * 
+ * 功能描述：
+ * - 定义应用状态接口的响应格式
+ * - 提供 Swagger 文档生成支持
+ * 
+ * @author angjustinl
+ * @version 1.0.0
+ * @since 2025-12-17
+ */
+
+import { ApiProperty } from '@nestjs/swagger';
+
+/**
+ * 应用状态响应 DTO
+ */
+export class AppStatusResponseDto {
+  @ApiProperty({
+    description: '服务名称',
+    example: 'Pixel Game Server',
+    type: String
+  })
+  service: string;
+
+  @ApiProperty({
+    description: '服务版本',
+    example: '1.0.0',
+    type: String
+  })
+  version: string;
+
+  @ApiProperty({
+    description: '运行状态',
+    example: 'running',
+    enum: ['running', 'starting', 'stopping', 'error'],
+    type: String
+  })
+  status: string;
+
+  @ApiProperty({
+    description: '当前时间戳',
+    example: '2025-12-17T15:00:00.000Z',
+    type: String,
+    format: 'date-time'
+  })
+  timestamp: string;
+
+  @ApiProperty({
+    description: '运行时间（秒）',
+    example: 3600,
+    type: Number,
+    minimum: 0
+  })
+  uptime: number;
+
+  @ApiProperty({
+    description: '运行环境',
+    example: 'development',
+    enum: ['development', 'production', 'test'],
+    type: String
+  })
+  environment: string;
+
+  @ApiProperty({
+    description: '存储模式',
+    example: 'memory',
+    enum: ['database', 'memory'],
+    type: String
+  })
+  storage_mode: 'database' | 'memory';
+}
\ No newline at end of file
diff --git a/src/business/shared/dto/error-response.dto.ts b/src/business/shared/dto/error-response.dto.ts
new file mode 100644
index 0000000..595fc42
--- /dev/null
+++ b/src/business/shared/dto/error-response.dto.ts
@@ -0,0 +1,56 @@
+/**
+ * 通用错误响应 DTO
+ * 
+ * 功能描述：
+ * - 定义统一的错误响应格式
+ * - 提供 Swagger 文档生成支持
+ * 
+ * @author angjustinl
+ * @version 1.0.0
+ * @since 2025-12-17
+ */
+
+import { ApiProperty } from '@nestjs/swagger';
+
+/**
+ * 通用错误响应 DTO
+ */
+export class ErrorResponseDto {
+  @ApiProperty({
+    description: 'HTTP 状态码',
+    example: 500,
+    type: Number
+  })
+  statusCode: number;
+
+  @ApiProperty({
+    description: '错误消息',
+    example: 'Internal server error',
+    type: String
+  })
+  message: string;
+
+  @ApiProperty({
+    description: '错误发生时间',
+    example: '2025-12-17T15:00:00.000Z',
+    type: String,
+    format: 'date-time'
+  })
+  timestamp: string;
+
+  @ApiProperty({
+    description: '请求路径',
+    example: '/api/status',
+    type: String,
+    required: false
+  })
+  path?: string;
+
+  @ApiProperty({
+    description: '错误代码',
+    example: 'INTERNAL_ERROR',
+    type: String,
+    required: false
+  })
+  error?: string;
+}
\ No newline at end of file
diff --git a/src/business/shared/dto/index.ts b/src/business/shared/dto/index.ts
new file mode 100644
index 0000000..cfdb8f7
--- /dev/null
+++ b/src/business/shared/dto/index.ts
@@ -0,0 +1,17 @@
+/**
+ * 共享 DTO 统一导出
+ * 
+ * 功能描述：
+ * - 导出所有共享的 DTO 类
+ * - 提供统一的导入入口
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+// 应用状态相关
+export * from './app-status.dto';
+
+// 错误响应相关
+export * from './error-response.dto';
\ No newline at end of file
diff --git a/src/business/shared/index.ts b/src/business/shared/index.ts
new file mode 100644
index 0000000..8d8c500
--- /dev/null
+++ b/src/business/shared/index.ts
@@ -0,0 +1,14 @@
+/**
+ * 共享模块统一导出
+ * 
+ * 功能描述：
+ * - 导出所有共享的组件和类型
+ * - 提供统一的导入入口
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+// DTO
+export * from './dto';
\ No newline at end of file
diff --git a/src/business/user-mgmt/controllers/user-status.controller.ts b/src/business/user-mgmt/controllers/user-status.controller.ts
new file mode 100644
index 0000000..e58d197
--- /dev/null
+++ b/src/business/user-mgmt/controllers/user-status.controller.ts
@@ -0,0 +1,162 @@
+/**
+ * 用户状态管理控制器
+ * 
+ * 功能描述：
+ * - 管理员管理用户账户状态
+ * - 支持批量状态操作
+ * - 提供状态变更审计日志
+ * 
+ * API端点：
+ * - PUT /admin/users/:id/status - 修改用户状态
+ * - POST /admin/users/batch-status - 批量修改用户状态
+ * - GET /admin/users/status-stats - 获取用户状态统计
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import { Body, Controller, Get, HttpCode, HttpStatus, Param, Put, Post, UseGuards, ValidationPipe, UsePipes, Logger } from '@nestjs/common';
+import { ApiBearerAuth, ApiBody, ApiOperation, ApiParam, ApiResponse, ApiTags } from '@nestjs/swagger';
+import { AdminGuard } from '../../admin/guards/admin.guard';
+import { UserManagementService } from '../services/user-management.service';
+import { Throttle, ThrottlePresets } from '../../security/decorators/throttle.decorator';
+import { Timeout, TimeoutPresets } from '../../security/decorators/timeout.decorator';
+import { UserStatusDto, BatchUserStatusDto } from '../dto/user-status.dto';
+import { UserStatusResponseDto, BatchUserStatusResponseDto, UserStatusStatsResponseDto } from '../dto/user-status-response.dto';
+
+@ApiTags('user-management')
+@Controller('admin/users')
+export class UserStatusController {
+  private readonly logger = new Logger(UserStatusController.name);
+
+  constructor(private readonly userManagementService: UserManagementService) {}
+
+  /**
+   * 修改用户状态
+   * 
+   * @param id 用户ID
+   * @param userStatusDto 状态修改数据
+   * @returns 修改结果
+   */
+  @ApiBearerAuth('JWT-auth')
+  @ApiOperation({ 
+    summary: '修改用户状态', 
+    description: '管理员修改指定用户的账户状态，支持激活、锁定、禁用等操作' 
+  })
+  @ApiParam({ name: 'id', description: '用户ID' })
+  @ApiBody({ type: UserStatusDto })
+  @ApiResponse({ 
+    status: 200, 
+    description: '状态修改成功', 
+    type: UserStatusResponseDto 
+  })
+  @ApiResponse({ 
+    status: 403, 
+    description: '权限不足' 
+  })
+  @ApiResponse({ 
+    status: 404, 
+    description: '用户不存在' 
+  })
+  @ApiResponse({ 
+    status: 429, 
+    description: '操作过于频繁' 
+  })
+  @UseGuards(AdminGuard)
+  @Throttle(ThrottlePresets.ADMIN_OPERATION)
+  @Timeout(TimeoutPresets.NORMAL)
+  @Put(':id/status')
+  @HttpCode(HttpStatus.OK)
+  @UsePipes(new ValidationPipe({ transform: true }))
+  async updateUserStatus(
+    @Param('id') id: string, 
+    @Body() userStatusDto: UserStatusDto
+  ): Promise<UserStatusResponseDto> {
+    this.logger.log('管理员修改用户状态', {
+      operation: 'update_user_status',
+      userId: id,
+      newStatus: userStatusDto.status,
+      reason: userStatusDto.reason,
+      timestamp: new Date().toISOString()
+    });
+
+    return await this.userManagementService.updateUserStatus(BigInt(id), userStatusDto);
+  }
+
+  /**
+   * 批量修改用户状态
+   * 
+   * @param batchUserStatusDto 批量状态修改数据
+   * @returns 批量修改结果
+   */
+  @ApiBearerAuth('JWT-auth')
+  @ApiOperation({ 
+    summary: '批量修改用户状态', 
+    description: '管理员批量修改多个用户的账户状态' 
+  })
+  @ApiBody({ type: BatchUserStatusDto })
+  @ApiResponse({ 
+    status: 200, 
+    description: '批量修改成功', 
+    type: BatchUserStatusResponseDto 
+  })
+  @ApiResponse({ 
+    status: 403, 
+    description: '权限不足' 
+  })
+  @ApiResponse({ 
+    status: 429, 
+    description: '操作过于频繁' 
+  })
+  @UseGuards(AdminGuard)
+  @Throttle(ThrottlePresets.ADMIN_OPERATION)
+  @Timeout(TimeoutPresets.SLOW)
+  @Post('batch-status')
+  @HttpCode(HttpStatus.OK)
+  @UsePipes(new ValidationPipe({ transform: true }))
+  async batchUpdateUserStatus(
+    @Body() batchUserStatusDto: BatchUserStatusDto
+  ): Promise<BatchUserStatusResponseDto> {
+    this.logger.log('管理员批量修改用户状态', {
+      operation: 'batch_update_user_status',
+      userCount: batchUserStatusDto.user_ids.length,
+      newStatus: batchUserStatusDto.status,
+      reason: batchUserStatusDto.reason,
+      timestamp: new Date().toISOString()
+    });
+
+    return await this.userManagementService.batchUpdateUserStatus(batchUserStatusDto);
+  }
+
+  /**
+   * 获取用户状态统计
+   * 
+   * @returns 状态统计信息
+   */
+  @ApiBearerAuth('JWT-auth')
+  @ApiOperation({ 
+    summary: '获取用户状态统计', 
+    description: '获取各种用户状态的数量统计信息' 
+  })
+  @ApiResponse({ 
+    status: 200, 
+    description: '获取成功', 
+    type: UserStatusStatsResponseDto 
+  })
+  @ApiResponse({ 
+    status: 403, 
+    description: '权限不足' 
+  })
+  @UseGuards(AdminGuard)
+  @Timeout(TimeoutPresets.DATABASE_QUERY)
+  @Get('status-stats')
+  async getUserStatusStats(): Promise<UserStatusStatsResponseDto> {
+    this.logger.log('管理员获取用户状态统计', {
+      operation: 'get_user_status_stats',
+      timestamp: new Date().toISOString()
+    });
+
+    return await this.userManagementService.getUserStatusStats();
+  }
+}
\ No newline at end of file
diff --git a/src/business/user-mgmt/dto/user-status-response.dto.ts b/src/business/user-mgmt/dto/user-status-response.dto.ts
new file mode 100644
index 0000000..1f32216
--- /dev/null
+++ b/src/business/user-mgmt/dto/user-status-response.dto.ts
@@ -0,0 +1,294 @@
+/**
+ * 用户状态管理响应 DTO
+ * 
+ * 功能描述：
+ * - 定义用户状态管理相关的响应数据结构
+ * - 提供Swagger文档生成支持
+ * - 确保状态管理API响应的数据格式一致性
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import { ApiProperty } from '@nestjs/swagger';
+import { UserStatus } from '../enums/user-status.enum';
+
+/**
+ * 用户状态信息DTO
+ */
+export class UserStatusInfoDto {
+  @ApiProperty({
+    description: '用户ID',
+    example: '1'
+  })
+  id: string;
+
+  @ApiProperty({
+    description: '用户名',
+    example: 'testuser'
+  })
+  username: string;
+
+  @ApiProperty({
+    description: '用户昵称',
+    example: '测试用户'
+  })
+  nickname: string;
+
+  @ApiProperty({
+    description: '用户状态',
+    enum: UserStatus,
+    example: UserStatus.ACTIVE
+  })
+  status: UserStatus;
+
+  @ApiProperty({
+    description: '状态描述',
+    example: '正常'
+  })
+  status_description: string;
+
+  @ApiProperty({
+    description: '状态修改时间',
+    example: '2025-12-24T10:00:00.000Z'
+  })
+  updated_at: Date;
+}
+
+/**
+ * 用户状态修改响应数据DTO
+ */
+export class UserStatusDataDto {
+  @ApiProperty({
+    description: '用户信息',
+    type: UserStatusInfoDto
+  })
+  user: UserStatusInfoDto;
+
+  @ApiProperty({
+    description: '修改原因',
+    example: '用户违反社区规定',
+    required: false
+  })
+  reason?: string;
+}
+
+/**
+ * 用户状态修改响应DTO
+ */
+export class UserStatusResponseDto {
+  @ApiProperty({
+    description: '请求是否成功',
+    example: true
+  })
+  success: boolean;
+
+  @ApiProperty({
+    description: '响应数据',
+    type: UserStatusDataDto,
+    required: false
+  })
+  data?: UserStatusDataDto;
+
+  @ApiProperty({
+    description: '响应消息',
+    example: '用户状态修改成功'
+  })
+  message: string;
+
+  @ApiProperty({
+    description: '错误代码',
+    example: 'USER_STATUS_UPDATE_FAILED',
+    required: false
+  })
+  error_code?: string;
+}
+
+/**
+ * 批量操作结果DTO
+ */
+export class BatchOperationResultDto {
+  @ApiProperty({
+    description: '成功处理的用户列表',
+    type: [UserStatusInfoDto]
+  })
+  success_users: UserStatusInfoDto[];
+
+  @ApiProperty({
+    description: '处理失败的用户列表',
+    type: [Object],
+    example: [
+      {
+        user_id: '999',
+        error: '用户不存在'
+      }
+    ]
+  })
+  failed_users: Array<{
+    user_id: string;
+    error: string;
+  }>;
+
+  @ApiProperty({
+    description: '成功处理数量',
+    example: 5
+  })
+  success_count: number;
+
+  @ApiProperty({
+    description: '失败处理数量',
+    example: 1
+  })
+  failed_count: number;
+
+  @ApiProperty({
+    description: '总处理数量',
+    example: 6
+  })
+  total_count: number;
+}
+
+/**
+ * 批量用户状态修改响应数据DTO
+ */
+export class BatchUserStatusDataDto {
+  @ApiProperty({
+    description: '批量操作结果',
+    type: BatchOperationResultDto
+  })
+  result: BatchOperationResultDto;
+
+  @ApiProperty({
+    description: '修改原因',
+    example: '批量处理违规用户',
+    required: false
+  })
+  reason?: string;
+}
+
+/**
+ * 批量用户状态修改响应DTO
+ */
+export class BatchUserStatusResponseDto {
+  @ApiProperty({
+    description: '请求是否成功',
+    example: true
+  })
+  success: boolean;
+
+  @ApiProperty({
+    description: '响应数据',
+    type: BatchUserStatusDataDto,
+    required: false
+  })
+  data?: BatchUserStatusDataDto;
+
+  @ApiProperty({
+    description: '响应消息',
+    example: '批量用户状态修改完成'
+  })
+  message: string;
+
+  @ApiProperty({
+    description: '错误代码',
+    example: 'BATCH_USER_STATUS_UPDATE_FAILED',
+    required: false
+  })
+  error_code?: string;
+}
+
+/**
+ * 用户状态统计DTO
+ */
+export class UserStatusStatsDto {
+  @ApiProperty({
+    description: '正常用户数量',
+    example: 1250
+  })
+  active: number;
+
+  @ApiProperty({
+    description: '未激活用户数量',
+    example: 45
+  })
+  inactive: number;
+
+  @ApiProperty({
+    description: '锁定用户数量',
+    example: 12
+  })
+  locked: number;
+
+  @ApiProperty({
+    description: '禁用用户数量',
+    example: 8
+  })
+  banned: number;
+
+  @ApiProperty({
+    description: '已删除用户数量',
+    example: 3
+  })
+  deleted: number;
+
+  @ApiProperty({
+    description: '待审核用户数量',
+    example: 15
+  })
+  pending: number;
+
+  @ApiProperty({
+    description: '总用户数量',
+    example: 1333
+  })
+  total: number;
+}
+
+/**
+ * 用户状态统计响应数据DTO
+ */
+export class UserStatusStatsDataDto {
+  @ApiProperty({
+    description: '用户状态统计',
+    type: UserStatusStatsDto
+  })
+  stats: UserStatusStatsDto;
+
+  @ApiProperty({
+    description: '统计时间',
+    example: '2025-12-24T10:00:00.000Z'
+  })
+  timestamp: string;
+}
+
+/**
+ * 用户状态统计响应DTO
+ */
+export class UserStatusStatsResponseDto {
+  @ApiProperty({
+    description: '请求是否成功',
+    example: true
+  })
+  success: boolean;
+
+  @ApiProperty({
+    description: '响应数据',
+    type: UserStatusStatsDataDto,
+    required: false
+  })
+  data?: UserStatusStatsDataDto;
+
+  @ApiProperty({
+    description: '响应消息',
+    example: '用户状态统计获取成功'
+  })
+  message: string;
+
+  @ApiProperty({
+    description: '错误代码',
+    example: 'USER_STATUS_STATS_FAILED',
+    required: false
+  })
+  error_code?: string;
+}
\ No newline at end of file
diff --git a/src/business/user-mgmt/dto/user-status.dto.ts b/src/business/user-mgmt/dto/user-status.dto.ts
new file mode 100644
index 0000000..459d167
--- /dev/null
+++ b/src/business/user-mgmt/dto/user-status.dto.ts
@@ -0,0 +1,95 @@
+/**
+ * 用户状态管理 DTO
+ * 
+ * 功能描述：
+ * - 定义用户状态管理相关的请求数据结构
+ * - 提供数据验证规则和错误提示
+ * - 确保状态管理操作的数据格式一致性
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import { IsString, IsNotEmpty, IsEnum, IsOptional, IsArray, ArrayMinSize, ArrayMaxSize } from 'class-validator';
+import { ApiProperty } from '@nestjs/swagger';
+import { UserStatus } from '../enums/user-status.enum';
+
+/**
+ * 用户状态修改请求DTO
+ */
+export class UserStatusDto {
+  /**
+   * 新的用户状态
+   */
+  @ApiProperty({
+    description: '用户状态',
+    enum: UserStatus,
+    example: UserStatus.ACTIVE,
+    enumName: 'UserStatus'
+  })
+  @IsEnum(UserStatus, { message: '用户状态必须是有效的枚举值' })
+  @IsNotEmpty({ message: '用户状态不能为空' })
+  status: UserStatus;
+
+  /**
+   * 状态修改原因
+   */
+  @ApiProperty({
+    description: '状态修改原因（可选）',
+    example: '用户违反社区规定',
+    required: false,
+    maxLength: 200
+  })
+  @IsOptional()
+  @IsString({ message: '修改原因必须是字符串' })
+  reason?: string;
+}
+
+/**
+ * 批量用户状态修改请求DTO
+ */
+export class BatchUserStatusDto {
+  /**
+   * 用户ID列表
+   */
+  @ApiProperty({
+    description: '用户ID列表',
+    example: ['1', '2', '3'],
+    type: [String],
+    minItems: 1,
+    maxItems: 100
+  })
+  @IsArray({ message: '用户ID列表必须是数组' })
+  @ArrayMinSize(1, { message: '至少需要选择一个用户' })
+  @ArrayMaxSize(100, { message: '一次最多只能操作100个用户' })
+  @IsString({ each: true, message: '用户ID必须是字符串' })
+  @IsNotEmpty({ each: true, message: '用户ID不能为空' })
+  user_ids: string[];
+
+  /**
+   * 新的用户状态
+   */
+  @ApiProperty({
+    description: '用户状态',
+    enum: UserStatus,
+    example: UserStatus.LOCKED,
+    enumName: 'UserStatus'
+  })
+  @IsEnum(UserStatus, { message: '用户状态必须是有效的枚举值' })
+  @IsNotEmpty({ message: '用户状态不能为空' })
+  status: UserStatus;
+
+  /**
+   * 状态修改原因
+   */
+  @ApiProperty({
+    description: '批量修改原因（可选）',
+    example: '批量处理违规用户',
+    required: false,
+    maxLength: 200
+  })
+  @IsOptional()
+  @IsString({ message: '修改原因必须是字符串' })
+  reason?: string;
+}
\ No newline at end of file
diff --git a/src/business/user-mgmt/enums/user-status.enum.ts b/src/business/user-mgmt/enums/user-status.enum.ts
new file mode 100644
index 0000000..3050110
--- /dev/null
+++ b/src/business/user-mgmt/enums/user-status.enum.ts
@@ -0,0 +1,100 @@
+/**
+ * 用户状态枚举
+ * 
+ * 功能描述：
+ * - 定义用户账户的各种状态
+ * - 提供状态检查和描述功能
+ * - 支持用户生命周期管理
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+/**
+ * 用户状态枚举
+ * 
+ * 状态说明：
+ * - active: 正常状态，可以正常使用所有功能
+ * - inactive: 未激活状态，通常是新注册用户需要邮箱验证
+ * - locked: 临时锁定状态，可以解锁恢复
+ * - banned: 永久禁用状态，需要管理员处理
+ * - deleted: 软删除状态，数据保留但不可使用
+ * - pending: 待审核状态，需要管理员审核后激活
+ */
+export enum UserStatus {
+  ACTIVE = 'active',      // 正常状态
+  INACTIVE = 'inactive',  // 未激活状态
+  LOCKED = 'locked',      // 锁定状态
+  BANNED = 'banned',      // 禁用状态
+  DELETED = 'deleted',    // 删除状态
+  PENDING = 'pending'     // 待审核状态
+}
+
+/**
+ * 获取用户状态的中文描述
+ * 
+ * @param status 用户状态
+ * @returns 状态描述
+ */
+export function getUserStatusDescription(status: UserStatus): string {
+  const descriptions = {
+    [UserStatus.ACTIVE]: '正常',
+    [UserStatus.INACTIVE]: '未激活',
+    [UserStatus.LOCKED]: '已锁定',
+    [UserStatus.BANNED]: '已禁用',
+    [UserStatus.DELETED]: '已删除',
+    [UserStatus.PENDING]: '待审核'
+  };
+  
+  return descriptions[status] || '未知状态';
+}
+
+/**
+ * 检查用户是否可以登录
+ * 
+ * @param status 用户状态
+ * @returns 是否可以登录
+ */
+export function canUserLogin(status: UserStatus): boolean {
+  // 只有正常状态的用户可以登录
+  return status === UserStatus.ACTIVE;
+}
+
+/**
+ * 获取用户状态对应的错误消息
+ * 
+ * @param status 用户状态
+ * @returns 错误消息
+ */
+export function getUserStatusErrorMessage(status: UserStatus): string {
+  const errorMessages = {
+    [UserStatus.ACTIVE]: '', // 正常状态无错误
+    [UserStatus.INACTIVE]: '账户未激活，请先验证邮箱',
+    [UserStatus.LOCKED]: '账户已被锁定，请联系管理员',
+    [UserStatus.BANNED]: '账户已被禁用，请联系管理员',
+    [UserStatus.DELETED]: '账户不存在',
+    [UserStatus.PENDING]: '账户待审核，请等待管理员审核'
+  };
+  
+  return errorMessages[status] || '账户状态异常';
+}
+
+/**
+ * 获取所有可用的用户状态
+ * 
+ * @returns 用户状态数组
+ */
+export function getAllUserStatuses(): UserStatus[] {
+  return Object.values(UserStatus);
+}
+
+/**
+ * 检查状态值是否有效
+ * 
+ * @param status 状态值
+ * @returns 是否为有效状态
+ */
+export function isValidUserStatus(status: string): status is UserStatus {
+  return Object.values(UserStatus).includes(status as UserStatus);
+}
\ No newline at end of file
diff --git a/src/business/user-mgmt/index.ts b/src/business/user-mgmt/index.ts
new file mode 100644
index 0000000..10cfaa0
--- /dev/null
+++ b/src/business/user-mgmt/index.ts
@@ -0,0 +1,22 @@
+/**
+ * 用户管理业务模块导出
+ * 
+ * 功能概述：
+ * - 用户状态管理（激活、锁定、禁用等）
+ * - 批量用户操作
+ * - 用户状态统计和分析
+ * - 状态变更审计和历史记录
+ */
+
+// 模块
+export * from './user-mgmt.module';
+
+// 控制器
+export * from './controllers/user-status.controller';
+
+// 服务
+export * from './services/user-management.service';
+
+// DTO
+export * from './dto/user-status.dto';
+export * from './dto/user-status-response.dto';
\ No newline at end of file
diff --git a/src/business/user-mgmt/services/user-management.service.ts b/src/business/user-mgmt/services/user-management.service.ts
new file mode 100644
index 0000000..a37d8d5
--- /dev/null
+++ b/src/business/user-mgmt/services/user-management.service.ts
@@ -0,0 +1,199 @@
+/**
+ * 用户管理业务服务
+ * 
+ * 功能描述：
+ * - 用户状态管理业务逻辑
+ * - 批量用户操作
+ * - 用户状态统计
+ * - 状态变更审计
+ * 
+ * 职责分工：
+ * - 专注于用户管理相关的业务逻辑
+ * - 调用 AdminService 的底层方法
+ * - 提供用户管理特定的业务规则
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import { Injectable, Logger } from '@nestjs/common';
+import { AdminService } from '../../admin/admin.service';
+import { UserStatusDto, BatchUserStatusDto } from '../dto/user-status.dto';
+import { 
+  UserStatusResponseDto, 
+  BatchUserStatusResponseDto, 
+  UserStatusStatsResponseDto 
+} from '../dto/user-status-response.dto';
+
+@Injectable()
+export class UserManagementService {
+  private readonly logger = new Logger(UserManagementService.name);
+
+  constructor(private readonly adminService: AdminService) {}
+
+  /**
+   * 修改用户状态
+   * 
+   * 业务逻辑：
+   * 1. 验证状态变更的业务规则
+   * 2. 记录状态变更原因
+   * 3. 调用底层服务执行变更
+   * 4. 记录业务审计日志
+   * 
+   * @param userId 用户ID
+   * @param userStatusDto 状态修改数据
+   * @returns 修改结果
+   */
+  async updateUserStatus(userId: bigint, userStatusDto: UserStatusDto): Promise<UserStatusResponseDto> {
+    this.logger.log('用户管理：开始修改用户状态', {
+      operation: 'user_mgmt_update_status',
+      userId: userId.toString(),
+      newStatus: userStatusDto.status,
+      reason: userStatusDto.reason,
+      timestamp: new Date().toISOString()
+    });
+
+    // 调用底层管理员服务
+    const result = await this.adminService.updateUserStatus(userId, userStatusDto);
+
+    // 记录业务层日志
+    if (result.success) {
+      this.logger.log('用户管理：用户状态修改成功', {
+        operation: 'user_mgmt_update_status_success',
+        userId: userId.toString(),
+        newStatus: userStatusDto.status,
+        timestamp: new Date().toISOString()
+      });
+    }
+
+    return result;
+  }
+
+  /**
+   * 批量修改用户状态
+   * 
+   * 业务逻辑：
+   * 1. 验证批量操作的业务规则
+   * 2. 分批处理大量用户
+   * 3. 提供批量操作的进度反馈
+   * 4. 记录批量操作审计
+   * 
+   * @param batchUserStatusDto 批量状态修改数据
+   * @returns 批量修改结果
+   */
+  async batchUpdateUserStatus(batchUserStatusDto: BatchUserStatusDto): Promise<BatchUserStatusResponseDto> {
+    this.logger.log('用户管理：开始批量修改用户状态', {
+      operation: 'user_mgmt_batch_update_status',
+      userCount: batchUserStatusDto.user_ids.length,
+      newStatus: batchUserStatusDto.status,
+      reason: batchUserStatusDto.reason,
+      timestamp: new Date().toISOString()
+    });
+
+    // 业务规则：限制批量操作的数量
+    if (batchUserStatusDto.user_ids.length > 100) {
+      this.logger.warn('用户管理：批量操作数量超限', {
+        operation: 'user_mgmt_batch_update_limit_exceeded',
+        requestCount: batchUserStatusDto.user_ids.length,
+        maxAllowed: 100
+      });
+
+      return {
+        success: false,
+        message: '批量操作数量不能超过100个用户',
+        error_code: 'BATCH_OPERATION_LIMIT_EXCEEDED'
+      };
+    }
+
+    // 调用底层管理员服务
+    const result = await this.adminService.batchUpdateUserStatus(batchUserStatusDto);
+
+    // 记录业务层日志
+    if (result.success) {
+      this.logger.log('用户管理：批量用户状态修改完成', {
+        operation: 'user_mgmt_batch_update_status_success',
+        successCount: result.data?.result.success_count || 0,
+        failedCount: result.data?.result.failed_count || 0,
+        timestamp: new Date().toISOString()
+      });
+    }
+
+    return result;
+  }
+
+  /**
+   * 获取用户状态统计
+   * 
+   * 业务逻辑：
+   * 1. 获取基础统计数据
+   * 2. 计算业务相关的指标
+   * 3. 提供状态分布分析
+   * 4. 缓存统计结果
+   * 
+   * @returns 状态统计信息
+   */
+  async getUserStatusStats(): Promise<UserStatusStatsResponseDto> {
+    this.logger.log('用户管理：获取用户状态统计', {
+      operation: 'user_mgmt_get_status_stats',
+      timestamp: new Date().toISOString()
+    });
+
+    // 调用底层管理员服务
+    const result = await this.adminService.getUserStatusStats();
+
+    // 业务层可以在这里添加额外的统计分析
+    if (result.success && result.data) {
+      const stats = result.data.stats;
+      
+      // 计算业务指标
+      const activeRate = stats.total > 0 ? (stats.active / stats.total * 100).toFixed(2) : '0';
+      const problemUserCount = stats.locked + stats.banned + stats.deleted;
+      
+      this.logger.log('用户管理：用户状态统计分析', {
+        operation: 'user_mgmt_status_analysis',
+        totalUsers: stats.total,
+        activeUsers: stats.active,
+        activeRate: `${activeRate}%`,
+        problemUsers: problemUserCount,
+        timestamp: new Date().toISOString()
+      });
+    }
+
+    return result;
+  }
+
+  /**
+   * 获取用户状态变更历史
+   * 
+   * 业务功能：
+   * - 查询指定用户的状态变更记录
+   * - 提供状态变更的审计追踪
+   * - 支持时间范围查询
+   * 
+   * @param userId 用户ID
+   * @param limit 返回数量限制
+   * @returns 状态变更历史
+   */
+  async getUserStatusHistory(userId: bigint, limit: number = 10) {
+    this.logger.log('用户管理：获取用户状态变更历史', {
+      operation: 'user_mgmt_get_status_history',
+      userId: userId.toString(),
+      limit,
+      timestamp: new Date().toISOString()
+    });
+
+    // TODO: 实现状态变更历史查询
+    // 这里可以调用专门的审计日志服务
+    
+    return {
+      success: true,
+      data: {
+        user_id: userId.toString(),
+        history: [] as any[],
+        total_count: 0
+      },
+      message: '状态变更历史获取成功（功能待实现）'
+    };
+  }
+}
\ No newline at end of file
diff --git a/src/business/user-mgmt/user-mgmt.module.ts b/src/business/user-mgmt/user-mgmt.module.ts
new file mode 100644
index 0000000..95f80c7
--- /dev/null
+++ b/src/business/user-mgmt/user-mgmt.module.ts
@@ -0,0 +1,30 @@
+/**
+ * 用户管理业务模块
+ * 
+ * 功能描述：
+ * - 整合用户状态管理相关的所有组件
+ * - 提供用户生命周期管理功能
+ * - 支持批量操作和状态统计
+ * 
+ * 依赖关系：
+ * - 依赖 AdminModule 提供底层管理功能
+ * - 依赖 Core 模块提供基础设施
+ * 
+ * @author kiro-ai
+ * @version 1.0.0
+ * @since 2025-12-24
+ */
+
+import { Module } from '@nestjs/common';
+import { UserStatusController } from './controllers/user-status.controller';
+import { UserManagementService } from './services/user-management.service';
+import { AdminModule } from '../admin/admin.module';
+import { AdminCoreModule } from '../../core/admin_core/admin_core.module';
+
+@Module({
+  imports: [AdminModule, AdminCoreModule],
+  controllers: [UserStatusController],
+  providers: [UserManagementService],
+  exports: [UserManagementService],
+})
+export class UserMgmtModule {}
\ No newline at end of file