diff --git a/account_switcher.py b/account_switcher.py
index 5bc2176..64c496c 100644
--- a/account_switcher.py
+++ b/account_switcher.py
@@ -273,10 +273,19 @@ class AccountSwitcher:
                 with open(self.package_json, "w", encoding="utf-8") as f:
                     json.dump(data, f, indent=2)
             
-            # 3. 清理特定的配置文件
+            # 3. 清理特定的配置文件和缓存
             local_app_data = Path(os.getenv('LOCALAPPDATA'))
             cursor_path = local_app_data / "Cursor"
             
+            # 需要清理的目录
+            cache_dirs = [
+                cursor_path / "Cache",
+                cursor_path / "Code Cache",
+                cursor_path / "GPUCache",
+                cursor_path / "Local Storage" / "leveldb"
+            ]
+            
+            # 需要删除的配置文件
             config_files = [
                 cursor_path / "User" / "globalStorage" / "storage.json",
                 cursor_path / "User" / "globalStorage" / "state.json",
@@ -285,6 +294,17 @@ class AccountSwitcher:
                 self.app_path / "settings.json"
             ]
             
+            # 清理缓存目录
+            for dir_path in cache_dirs:
+                if dir_path.exists():
+                    try:
+                        import shutil
+                        shutil.rmtree(str(dir_path))
+                        logging.info(f"清理目录成功: {dir_path}")
+                    except Exception as e:
+                        logging.warning(f"清理目录失败: {dir_path}, 错误: {str(e)}")
+            
+            # 删除配置文件
             for file_path in config_files:
                 if file_path.exists():
                     try:
@@ -297,7 +317,25 @@ class AccountSwitcher:
             if not self.registry.refresh_registry():
                 logging.warning("注册表刷新失败")
             
-            # 5. 重启Cursor
+            # 5. 删除卸载注册表项
+            try:
+                import winreg
+                with winreg.OpenKey(winreg.HKEY_CURRENT_USER, r"Software\Microsoft\Windows\CurrentVersion\Uninstall", 0, winreg.KEY_ALL_ACCESS) as key:
+                    # 遍历所有子键，找到Cursor相关的
+                    i = 0
+                    while True:
+                        try:
+                            subkey_name = winreg.EnumKey(key, i)
+                            if "Cursor" in subkey_name:
+                                winreg.DeleteKey(key, subkey_name)
+                                logging.info(f"删除注册表项成功: {subkey_name}")
+                            i += 1
+                        except WindowsError:
+                            break
+            except Exception as e:
+                logging.warning(f"删除注册表项失败: {str(e)}")
+            
+            # 6. 重启Cursor
             cursor_exe = self.cursor_path / "Cursor.exe"
             if cursor_exe.exists():
                 os.startfile(str(cursor_exe))
diff --git a/utils/cursor_registry.py b/utils/cursor_registry.py
index 7966fec..ad652f5 100644
--- a/utils/cursor_registry.py
+++ b/utils/cursor_registry.py
@@ -2,6 +2,7 @@ import os
 import winreg
 import logging
 from pathlib import Path
+import uuid
 
 class CursorRegistry:
     """Cursor注册表操作工具类"""
@@ -9,14 +10,27 @@ class CursorRegistry:
     def __init__(self):
         self.cursor_path = Path(os.path.expanduser("~")) / "AppData" / "Local" / "Programs" / "Cursor"
         self.app_path = self.cursor_path / "resources" / "app"
+        self.machine_guid_path = r"SOFTWARE\Microsoft\Cryptography"
+        self.machine_guid_name = "MachineGuid"
         
     def refresh_registry(self) -> bool:
-        """刷新Cursor相关的注册表项
-        
+        """刷新注册表
         Returns:
             bool: 是否成功
         """
         try:
+            # 生成新的GUID
+            new_guid = str(uuid.uuid4())
+            
+            # 修改 MachineGuid
+            try:
+                with winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, self.machine_guid_path, 0, winreg.KEY_ALL_ACCESS) as key:
+                    winreg.SetValueEx(key, self.machine_guid_name, 0, winreg.REG_SZ, new_guid)
+                    logging.info(f"更新 MachineGuid 成功: {new_guid}")
+            except Exception as e:
+                logging.error(f"更新 MachineGuid 失败: {str(e)}")
+                return False
+            
             # 获取Cursor安装路径
             cursor_exe = self.cursor_path / "Cursor.exe"
             if not cursor_exe.exists():
@@ -42,7 +56,7 @@ class CursorRegistry:
                 return False
                 
         except Exception as e:
-            logging.error(f"刷新注册表过程出错: {str(e)}")
+            logging.error(f"刷新注册表失败: {str(e)}")
             return False
             
     def clean_registry(self) -> bool: