diff --git a/scenes/prefabs/GrassTile.gd b/scenes/prefabs/GrassTile.gd
new file mode 100644
index 0000000..c1c66e1
--- /dev/null
+++ b/scenes/prefabs/GrassTile.gd
@@ -0,0 +1,122 @@
+# ============================================================================
+# 简单草地瓦片 - GrassTile.gd
+# 
+# 一个简单的32x32草地瓦片，自动对齐网格
+# 使用方法：
+#   1. 在场景中实例化 grass_tile_prefab.tscn
+#   2. 设置 texture 属性
+#   3. 调用 set_grid_position() 设置网格位置
+# ============================================================================
+
+class_name GrassTile
+extends Sprite2D
+
+# ============================================================================
+# 导出属性
+# ============================================================================
+@export var grid_position: Vector2i = Vector2i.ZERO : set = set_grid_position
+@export var auto_snap: bool = true  # 是否自动对齐网格
+
+# ============================================================================
+# 信号
+# ============================================================================
+signal position_changed(new_grid_pos: Vector2i)
+
+func _ready():
+	# 如果没有纹理，创建一个默认的占位符
+	if not texture:
+		_create_placeholder_texture()
+	
+	# 验证纹理尺寸
+	_validate_texture()
+	
+	# 自动对齐到网格
+	if auto_snap:
+		snap_to_grid()
+
+# ============================================================================
+# 公共方法
+# ============================================================================
+
+# 设置网格位置并自动对齐
+func set_grid_position(new_pos: Vector2i):
+	if grid_position != new_pos:
+		grid_position = new_pos
+		if auto_snap:
+			snap_to_grid()
+		position_changed.emit(grid_position)
+
+# 对齐到网格中心
+func snap_to_grid():
+	position = Vector2(
+		grid_position.x * 32.0 + 16.0,
+		grid_position.y * 32.0 + 16.0
+	)
+
+# 从世界坐标设置位置（会自动转换为网格坐标）
+func set_world_position(world_pos: Vector2):
+	var new_grid_pos = Vector2i(
+		int(world_pos.x / 32.0),
+		int(world_pos.y / 32.0)
+	)
+	set_grid_position(new_grid_pos)
+
+# 获取世界坐标
+func get_world_position() -> Vector2:
+	return position
+
+# ============================================================================
+# 私有方法
+# ============================================================================
+
+# 创建占位符纹理
+func _create_placeholder_texture():
+	var image = Image.create(32, 32, false, Image.FORMAT_RGBA8)
+	
+	# 创建简单的草地图案
+	var grass_color = Color(0.3, 0.8, 0.3, 1.0)  # 亮绿色
+	var dark_color = Color(0.2, 0.6, 0.2, 1.0)   # 深绿色
+	
+	# 填充基础颜色
+	image.fill(grass_color)
+	
+	# 添加简单的格子图案
+	for x in range(32):
+		for y in range(32):
+			if (x + y) % 8 < 4:
+				image.set_pixel(x, y, dark_color)
+	
+	# 创建纹理
+	var placeholder_texture = ImageTexture.new()
+	placeholder_texture.set_image(image)
+	texture = placeholder_texture
+
+# 验证纹理尺寸
+func _validate_texture():
+	if texture:
+		var size = Vector2i(texture.get_width(), texture.get_height())
+		if size.x % 32 != 0 or size.y % 32 != 0:
+			push_warning("GrassTile: 纹理尺寸不是32的倍数: " + str(size))
+			return false
+		return true
+	return false
+
+# ============================================================================
+# 调试方法
+# ============================================================================
+
+# 获取瓦片信息
+func get_tile_info() -> Dictionary:
+	return {
+		"grid_position": grid_position,
+		"world_position": position,
+		"texture_size": texture.get_size() if texture else Vector2.ZERO,
+		"auto_snap": auto_snap
+	}
+
+# 打印瓦片信息
+func print_info():
+	var info = get_tile_info()
+	print("=== 草地瓦片信息 ===")
+	for key in info:
+		print(key, ": ", info[key])
\ No newline at end of file
diff --git a/scenes/prefabs/grass_tile_prefab.tscn b/scenes/prefabs/grass_tile_prefab.tscn
new file mode 100644
index 0000000..9c85898
--- /dev/null
+++ b/scenes/prefabs/grass_tile_prefab.tscn
@@ -0,0 +1,10 @@
+[gd_scene load_steps=3 format=3 uid="uid://bvxqm8n7qwqxe"]
+
+[ext_resource type="Script" path="res://scenes/prefabs/GrassTile.gd" id="1_0x8qm"]
+
+[sub_resource type="PlaceholderTexture2D" id="PlaceholderTexture2D_1"]
+size = Vector2(32, 32)
+
+[node name="GrassTile" type="Sprite2D"]
+texture = SubResource("PlaceholderTexture2D_1")
+script = ExtResource("1_0x8qm")
\ No newline at end of file