diff --git a/core/storage.py b/core/storage.py
index 085f64a..dc957d5 100644
--- a/core/storage.py
+++ b/core/storage.py
@@ -409,6 +409,34 @@ class WebDAVFileStorage(FileStorageInterface):
                                     detail=f"目录创建失败: {content[:200]}",
                                 )
 
+    async def _is_dir_empty(self, dir_path: str) -> bool:
+        """检查目录是否为空"""
+        url = self._build_url(dir_path)
+        
+        async with aiohttp.ClientSession(auth=self.auth) as session:
+            async with session.request("PROPFIND", url, headers={"Depth": "1"}) as resp:
+                if resp.status != 207:  # 207 是 Multi-Status 响应
+                    return False
+                content = await resp.text()
+                # 如果只有一个 response（当前目录），说明目录为空
+                return content.count("<D:response>") <= 1
+
+    async def _delete_empty_dirs(self, file_path: str, session: aiohttp.ClientSession):
+        """递归删除空目录"""
+        path_obj = Path(file_path)
+        current_path = path_obj.parent
+        
+        while str(current_path) != ".":
+            if not await self._is_dir_empty(str(current_path)):
+                break
+                
+            url = self._build_url(str(current_path))
+            async with session.delete(url) as resp:
+                if resp.status not in (200, 204, 404):
+                    break
+            
+            current_path = current_path.parent
+
     async def save_file(self, file: UploadFile, save_path: str):
         """保存文件（自动创建目录）"""
         # 分离文件名和目录路径
@@ -437,19 +465,24 @@ class WebDAVFileStorage(FileStorageInterface):
             raise HTTPException(status_code=503, detail=f"WebDAV连接异常: {str(e)}")
 
     async def delete_file(self, file_code: FileCodes):
-        """删除WebDAV文件"""
+        """删除WebDAV文件及空目录"""
         file_path = await file_code.get_file_path()
         url = self._build_url(file_path)
 
         try:
             async with aiohttp.ClientSession(auth=self.auth) as session:
+                # 删除文件
                 async with session.delete(url) as resp:
-                    if resp.status not in (200, 204):
+                    if resp.status not in (200, 204, 404):
                         content = await resp.text()
                         raise HTTPException(
                             status_code=resp.status,
                             detail=f"WebDAV删除失败: {content[:200]}",
                         )
+                
+                # 使用同一个 session 删除空目录
+                await self._delete_empty_dirs(file_path, session)
+                
         except aiohttp.ClientError as e:
             raise HTTPException(status_code=503, detail=f"WebDAV连接异常: {str(e)}")