diff --git a/app/api/logic/order/OrderLogic.php b/app/api/logic/order/OrderLogic.php
index 547d1cf..ba65a94 100644
--- a/app/api/logic/order/OrderLogic.php
+++ b/app/api/logic/order/OrderLogic.php
@@ -198,6 +198,16 @@ class OrderLogic extends BaseLogic
             return false;
         }
         $_order = $orderInfo['order'];
+        $where=[
+            'merchant'=>$mer_id,
+            'order_arr'=>$_order['order_arr'],
+            'cart_id'=>$_order['cart_id'],
+        ];
+        $find=Opurchaseclass::where($where)->find();
+        if($find){
+            self::setError('订单已存在,不能重复提交');
+            return false;
+        }
         // if ($_order['total'] < $merchant['mer_money']) {
         //     self::setError('商户余额不足');
         //     return false;