diff --git a/db/sign_in_redis.py b/db/sign_in_redis.py
index 64bbfee..6bceffb 100644
--- a/db/sign_in_redis.py
+++ b/db/sign_in_redis.py
@@ -70,7 +70,8 @@ class SignInRedisDB:
                 for key in keys:
                     if isinstance(key, bytes):
                         key = key.decode('utf-8')
-                    if key != f'{self.prefix}last_reset_date':
+                    # 只删除每日签到计数键，保留用户总签到次数和重置日期
+                    if key != f'{self.prefix}last_reset_date' and not key.startswith(f'{self.prefix}user_total:'):
                         redis_client.delete(key)
             return True
         except Exception:
@@ -78,7 +79,7 @@ class SignInRedisDB:
 
     def get_user_total_sign_count_key(self, wx_id: str, group_id: str) -> str:
         """获取用户总签到次数的Redis键"""
-        return f"{self.prefix}sign:total:{wx_id}:{group_id}"
+        return f"{self.prefix}user_total:{wx_id}:{group_id}"
 
     def increment_user_sign_count(self, wx_id: str, group_id: str) -> int:
         """增加用户签到总次数"""