diff --git a/src/main/java/com/gameplatform/server/service/link/LinkStatusService.java b/src/main/java/com/gameplatform/server/service/link/LinkStatusService.java
index b632e9c..1f97363 100644
--- a/src/main/java/com/gameplatform/server/service/link/LinkStatusService.java
+++ b/src/main/java/com/gameplatform/server/service/link/LinkStatusService.java
@@ -1036,9 +1036,13 @@ private UserLinkStatusResponse doGetUserLinkStatus(Long linkId, String codeNo) {
     private PollLoginResponse handleSuccessfulLogin(LinkTask linkTask, String deviceId) {
         log.info("检测到已上号，更新状态为LOGGED_IN");
         
-        // 更新数据库状态
+        // 更新数据库状态（设置登录时间）
+        LocalDateTime now = LocalDateTime.now();
+        if (linkTask.getLoginAt() == null) {
+            linkTask.setLoginAt(now);
+        }
         linkTask.setStatus("LOGGED_IN");
-        linkTask.setUpdatedAt(LocalDateTime.now());
+        linkTask.setUpdatedAt(now);
         linkTaskMapper.updateById(linkTask);
         
         // Record login buffer and audit