diff --git a/app/Controller/CallBackController.php b/app/Controller/CallBackController.php
index c42e63f..576ee33 100644
--- a/app/Controller/CallBackController.php
+++ b/app/Controller/CallBackController.php
@@ -1753,7 +1753,7 @@ class CallBackController extends AbstractController
                 return $this->TrtcErrorReturn("缺少房间id");
             }
 
-            if ($request_params['EventInfo']['EventMsTs']){
+            if (empty($request_params['EventInfo']['EventMsTs'])){
                 return $this->TrtcErrorReturn("缺少时间戳");
             }