diff --git a/FlyCube/Api/Controller/CheckController.class.php b/FlyCube/Api/Controller/CheckController.class.php
index 604b86c..09d2a4b 100644
--- a/FlyCube/Api/Controller/CheckController.class.php
+++ b/FlyCube/Api/Controller/CheckController.class.php
@@ -143,7 +143,7 @@ class CheckController extends PublicController
 
         // 创建订单
         $data['shop_id'] = $_REQUEST['shop_id'];
-        $data['order_sn'] = $data['order_sn'] = date('ymdHi') . str_pad(mt_rand(1, 999999), 6, '0', STR_PAD_LEFT);
+        $data['order_sn'] = date('ymdHi') . str_pad(mt_rand(1, 9999), 4, '0', STR_PAD_LEFT);
         $data['total_weight'] = $total_weight;
         $data['total_price'] = $total_price;
         $data['total_num'] = $total_num;