diff --git a/app/tools/update_code.py b/app/tools/update_code.py
index cf161b4..50da702 100644
--- a/app/tools/update_code.py
+++ b/app/tools/update_code.py
@@ -3,30 +3,92 @@ import requests
 import zipfile
 import io
 import shutil
+import tempfile
+import time
 
 def update_code(parent=None, info_callback=None, error_callback=None):
     url = "http://gitea.qutrobot.top/robofish/MRobot/archive/User_code.zip"
     local_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), "../../assets/User_code")
+    
     try:
+        # 下载远程代码库
         resp = requests.get(url, timeout=30)
         resp.raise_for_status()
-        z = zipfile.ZipFile(io.BytesIO(resp.content))
-        if os.path.exists(local_dir):
-            shutil.rmtree(local_dir)
-        for member in z.namelist():
-            rel_path = os.path.relpath(member, z.namelist()[0])
-            if rel_path == ".":
-                continue
-            target_path = os.path.join(local_dir, rel_path)
-            if member.endswith('/'):
-                os.makedirs(target_path, exist_ok=True)
-            else:
-                os.makedirs(os.path.dirname(target_path), exist_ok=True)
-                with open(target_path, "wb") as f:
-                    f.write(z.read(member))
-        if info_callback:
-            info_callback(parent)
-        return True
+        
+        # 创建临时目录进行操作
+        with tempfile.TemporaryDirectory() as temp_dir:
+            # 解压到临时目录
+            z = zipfile.ZipFile(io.BytesIO(resp.content))
+            extract_path = os.path.join(temp_dir, "extracted")
+            z.extractall(extract_path)
+            
+            # 获取解压后的根目录
+            extracted_items = os.listdir(extract_path)
+            if not extracted_items:
+                raise Exception("下载的压缩包为空")
+            
+            source_root = os.path.join(extract_path, extracted_items[0])
+            
+            # 确保本地目录的父目录存在
+            parent_dir = os.path.dirname(local_dir)
+            if not os.path.exists(parent_dir):
+                os.makedirs(parent_dir, exist_ok=True)
+            
+            # 创建备份（如果原目录存在）
+            backup_dir = None
+            if os.path.exists(local_dir):
+                backup_dir = f"{local_dir}_backup_{int(time.time())}"
+                try:
+                    shutil.move(local_dir, backup_dir)
+                except Exception as e:
+                    # 如果移动失败，尝试强制删除
+                    shutil.rmtree(local_dir, ignore_errors=True)
+            
+            try:
+                # 复制新文件到目标位置
+                shutil.copytree(source_root, local_dir)
+                
+                # 验证复制是否成功
+                if not os.path.exists(local_dir):
+                    raise Exception("复制失败，目标目录不存在")
+                
+                # 设置正确的文件权限，确保文件可以被正常访问和修改
+                for root, dirs, files in os.walk(local_dir):
+                    # 设置目录权限为755 (rwxr-xr-x)
+                    for dir_name in dirs:
+                        dir_path = os.path.join(root, dir_name)
+                        try:
+                            os.chmod(dir_path, 0o755)
+                        except:
+                            pass
+                    
+                    # 设置文件权限为644 (rw-r--r--)
+                    for file_name in files:
+                        file_path = os.path.join(root, file_name)
+                        try:
+                            os.chmod(file_path, 0o644)
+                        except:
+                            pass
+                
+                # 删除备份目录（更新成功）
+                if backup_dir and os.path.exists(backup_dir):
+                    shutil.rmtree(backup_dir, ignore_errors=True)
+                
+                if info_callback:
+                    info_callback(parent)
+                return True
+                
+            except Exception as copy_error:
+                # 恢复备份
+                if backup_dir and os.path.exists(backup_dir):
+                    if os.path.exists(local_dir):
+                        shutil.rmtree(local_dir, ignore_errors=True)
+                    try:
+                        shutil.move(backup_dir, local_dir)
+                    except:
+                        pass
+                raise copy_error
+                
     except Exception as e:
         if error_callback:
             error_callback(parent, str(e))