diff --git a/app/core/mpclient.py b/app/core/mpclient.py
index d6c741a..730dbd1 100644
--- a/app/core/mpclient.py
+++ b/app/core/mpclient.py
@@ -81,15 +81,15 @@ class MPClient:
         
 
     # 根据unionid获取用户信息      
-    async def get_user_info(self, unionid: str) -> Optional[Dict]:
+    async def get_user_info(self, openid: str) -> Optional[Dict]:
         """
         获取用户基本信息
-        :param unionid: 用户unionid
+        :param openid: 用户openid
         :return: 用户信息字典
         """
         try:
             access_token = await self.get_access_token()
-            url = f"https://api.weixin.qq.com/cgi-bin/user/info?access_token={access_token}&unionid={unionid}&lang=zh_CN"
+            url = f"https://api.weixin.qq.com/cgi-bin/user/info?access_token={access_token}&openid={openid}&lang=zh_CN"
             
             async with aiohttp.ClientSession() as session:
                 async with session.get(url) as response: