diff --git a/src/business/login/login.service.spec.ts b/src/business/login/login.service.spec.ts
index e1495e3..0103608 100644
--- a/src/business/login/login.service.spec.ts
+++ b/src/business/login/login.service.spec.ts
@@ -33,6 +33,9 @@ describe('LoginService', () => {
       sendPasswordResetCode: jest.fn(),
       resetPassword: jest.fn(),
       changePassword: jest.fn(),
+      verificationCodeLogin: jest.fn(),
+      sendLoginVerificationCode: jest.fn(),
+      debugVerificationCode: jest.fn(),
     };
 
     const module: TestingModule = await Test.createTestingModule({
@@ -190,4 +193,81 @@ describe('LoginService', () => {
       expect(result.message).toBe('密码修改成功');
     });
   });
+
+  describe('verificationCodeLogin', () => {
+    it('should return success response for valid verification code login', async () => {
+      loginCoreService.verificationCodeLogin.mockResolvedValue({
+        user: mockUser,
+        isNewUser: false
+      });
+
+      const result = await service.verificationCodeLogin({
+        identifier: 'test@example.com',
+        verificationCode: '123456'
+      });
+
+      expect(result.success).toBe(true);
+      expect(result.data?.user.username).toBe('testuser');
+      expect(result.data?.access_token).toBeDefined();
+      expect(result.data?.is_new_user).toBe(false);
+      expect(result.message).toBe('验证码登录成功');
+    });
+
+    it('should return error response for failed verification code login', async () => {
+      loginCoreService.verificationCodeLogin.mockRejectedValue(
+        new Error('验证码验证失败')
+      );
+
+      const result = await service.verificationCodeLogin({
+        identifier: 'test@example.com',
+        verificationCode: '999999'
+      });
+
+      expect(result.success).toBe(false);
+      expect(result.message).toBe('验证码验证失败');
+      expect(result.error_code).toBe('VERIFICATION_CODE_LOGIN_FAILED');
+    });
+  });
+
+  describe('sendLoginVerificationCode', () => {
+    it('should return test mode response with verification code', async () => {
+      loginCoreService.sendLoginVerificationCode.mockResolvedValue({
+        code: '123456',
+        isTestMode: true
+      });
+
+      const result = await service.sendLoginVerificationCode('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);
+      expect(result.message).toContain('测试模式');
+    });
+
+    it('should return success response for real email sending', async () => {
+      loginCoreService.sendLoginVerificationCode.mockResolvedValue({
+        code: '123456',
+        isTestMode: false
+      });
+
+      const result = await service.sendLoginVerificationCode('test@example.com');
+
+      expect(result.success).toBe(true);
+      expect(result.data?.is_test_mode).toBe(false);
+      expect(result.message).toBe('验证码已发送，请查收');
+    });
+
+    it('should return error response for failed sending', async () => {
+      loginCoreService.sendLoginVerificationCode.mockRejectedValue(
+        new Error('用户不存在')
+      );
+
+      const result = await service.sendLoginVerificationCode('nonexistent@example.com');
+
+      expect(result.success).toBe(false);
+      expect(result.message).toBe('用户不存在');
+      expect(result.error_code).toBe('SEND_LOGIN_CODE_FAILED');
+    });
+  });
 });
\ No newline at end of file
diff --git a/src/core/login_core/login_core.service.spec.ts b/src/core/login_core/login_core.service.spec.ts
index 0c95a79..ffa2f52 100644
--- a/src/core/login_core/login_core.service.spec.ts
+++ b/src/core/login_core/login_core.service.spec.ts
@@ -6,7 +6,7 @@ import { Test, TestingModule } from '@nestjs/testing';
 import { LoginCoreService } from './login_core.service';
 import { UsersService } from '../db/users/users.service';
 import { EmailService } from '../utils/email/email.service';
-import { VerificationService } from '../utils/verification/verification.service';
+import { VerificationService, VerificationCodeType } from '../utils/verification/verification.service';
 import { UnauthorizedException, ConflictException, NotFoundException, BadRequestException } from '@nestjs/common';
 
 describe('LoginCoreService', () => {
@@ -248,4 +248,132 @@ describe('LoginCoreService', () => {
         .rejects.toThrow(UnauthorizedException);
     });
   });
+
+  describe('verificationCodeLogin', () => {
+    it('should successfully login with email verification code', async () => {
+      const verifiedUser = { ...mockUser, email_verified: true };
+      usersService.findByEmail.mockResolvedValue(verifiedUser);
+      verificationService.verifyCode.mockResolvedValue(true);
+
+      const result = await service.verificationCodeLogin({
+        identifier: 'test@example.com',
+        verificationCode: '123456'
+      });
+
+      expect(result.user).toEqual(verifiedUser);
+      expect(result.isNewUser).toBe(false);
+      expect(verificationService.verifyCode).toHaveBeenCalledWith(
+        'test@example.com',
+        VerificationCodeType.EMAIL_VERIFICATION,
+        '123456'
+      );
+    });
+
+    it('should successfully login with phone verification code', async () => {
+      const phoneUser = { ...mockUser, phone: '+8613800138000' };
+      usersService.findAll.mockResolvedValue([phoneUser]);
+      verificationService.verifyCode.mockResolvedValue(true);
+
+      const result = await service.verificationCodeLogin({
+        identifier: '+8613800138000',
+        verificationCode: '123456'
+      });
+
+      expect(result.user).toEqual(phoneUser);
+      expect(result.isNewUser).toBe(false);
+      expect(verificationService.verifyCode).toHaveBeenCalledWith(
+        '+8613800138000',
+        VerificationCodeType.SMS_VERIFICATION,
+        '123456'
+      );
+    });
+
+    it('should reject unverified email user', async () => {
+      usersService.findByEmail.mockResolvedValue(mockUser); // email_verified: false
+
+      await expect(service.verificationCodeLogin({
+        identifier: 'test@example.com',
+        verificationCode: '123456'
+      })).rejects.toThrow('邮箱未验证，请先验证邮箱后再使用验证码登录');
+    });
+
+    it('should reject non-existent user', async () => {
+      usersService.findByEmail.mockResolvedValue(null);
+
+      await expect(service.verificationCodeLogin({
+        identifier: 'nonexistent@example.com',
+        verificationCode: '123456'
+      })).rejects.toThrow('用户不存在，请先注册账户');
+    });
+
+    it('should reject invalid verification code', async () => {
+      const verifiedUser = { ...mockUser, email_verified: true };
+      usersService.findByEmail.mockResolvedValue(verifiedUser);
+      verificationService.verifyCode.mockResolvedValue(false);
+
+      await expect(service.verificationCodeLogin({
+        identifier: 'test@example.com',
+        verificationCode: '999999'
+      })).rejects.toThrow('验证码验证失败');
+    });
+
+    it('should reject invalid identifier format', async () => {
+      await expect(service.verificationCodeLogin({
+        identifier: 'invalid-identifier',
+        verificationCode: '123456'
+      })).rejects.toThrow('请提供有效的邮箱或手机号');
+    });
+  });
+
+  describe('sendLoginVerificationCode', () => {
+    it('should successfully send email login verification code', async () => {
+      const verifiedUser = { ...mockUser, email_verified: true };
+      usersService.findByEmail.mockResolvedValue(verifiedUser);
+      verificationService.generateCode.mockResolvedValue('123456');
+      emailService.sendVerificationCode.mockResolvedValue({
+        success: true,
+        isTestMode: false
+      });
+
+      const result = await service.sendLoginVerificationCode('test@example.com');
+
+      expect(result.code).toBe('123456');
+      expect(result.isTestMode).toBe(false);
+      expect(emailService.sendVerificationCode).toHaveBeenCalledWith({
+        email: 'test@example.com',
+        code: '123456',
+        nickname: mockUser.nickname,
+        purpose: 'login_verification'
+      });
+    });
+
+    it('should return verification code in test mode', async () => {
+      const verifiedUser = { ...mockUser, email_verified: true };
+      usersService.findByEmail.mockResolvedValue(verifiedUser);
+      verificationService.generateCode.mockResolvedValue('123456');
+      emailService.sendVerificationCode.mockResolvedValue({
+        success: true,
+        isTestMode: true
+      });
+
+      const result = await service.sendLoginVerificationCode('test@example.com');
+
+      expect(result.code).toBe('123456');
+      expect(result.isTestMode).toBe(true);
+    });
+
+    it('should reject unverified email', async () => {
+      usersService.findByEmail.mockResolvedValue(mockUser); // email_verified: false
+
+      await expect(service.sendLoginVerificationCode('test@example.com'))
+        .rejects.toThrow('邮箱未验证，无法使用验证码登录');
+    });
+
+    it('should reject non-existent user', async () => {
+      usersService.findByEmail.mockResolvedValue(null);
+
+      await expect(service.sendLoginVerificationCode('nonexistent@example.com'))
+        .rejects.toThrow('用户不存在');
+    });
+  });
 });
\ No newline at end of file