diff --git a/src/main/java/com/tem/bocai/service/impl/LoginServiceImpl.java b/src/main/java/com/tem/bocai/service/impl/LoginServiceImpl.java
index 35536d4..e79a32d 100644
--- a/src/main/java/com/tem/bocai/service/impl/LoginServiceImpl.java
+++ b/src/main/java/com/tem/bocai/service/impl/LoginServiceImpl.java
@@ -156,7 +156,7 @@ public class LoginServiceImpl implements LoginService {
     @Override
     public String saveUserInfo(LoginInfoResult loginInfoResult) {
         try {
-            Optional<LoginInfoResult> existingUser = loginInfoRepository.findByUsername(loginInfoResult.getUsername());
+            Optional<LoginInfoResult> existingUser = loginInfoRepository.findFirstByOrderByCreateTimeDesc();
             Date now = new Date();
 
             if (existingUser.isPresent()) {