diff --git a/service/app/server/Orders.php b/service/app/server/Orders.php
index 8ae1f315..a4d87e3e 100644
--- a/service/app/server/Orders.php
+++ b/service/app/server/Orders.php
@@ -94,6 +94,10 @@ class Orders {
 
     public static function syncFromThird(OrdersModel $order)
     {
+        $redisKey = 'sync_order:' . $order->sn;
+        if (Redis::exists($redisKey)) {
+            return 1;
+        }
         $got = null;
 
         switch ($order->os) {
@@ -144,6 +148,7 @@ class Orders {
         if ($back) {
             self::finance(0, $order->id, $order->asset_price);
         }
+        Redis::setEx($redisKey, 600, 1);
 
         return 0;
     }