diff --git a/common/libraries/receiver/Orders_v2_entity.php b/common/libraries/receiver/Orders_v2_entity.php
index 0ede6624..d378b99b 100644
--- a/common/libraries/receiver/Orders_v2_entity.php
+++ b/common/libraries/receiver/Orders_v2_entity.php
@@ -344,6 +344,11 @@ class Orders_v2_entity{
             ];
         }
         if($to_com_price>0 && !$this->ci->app_liche_orders_model->count(['o_id'=>$this->order_row['id'],'type'=>3,'status>='=>0])){
+            if(!$this->order_row['payway']){ //分期订单 尾款商户号取定定金订单的
+                $book_order = $this->ci->app_liche_orders_model->get(['status>='=>0,'type'=>1,'o_id'=>$oid]);
+                $book_order['mch_id'] && $companys['company']['wx_mchid'] = $book_order['mch_id'];
+                $book_order['company_id'] && $companys['company']['id'] = $book_order['company_id'];
+            }
             $order_type = 3;
             $sid = create_order_no(350200,'liche',1,$order_type);
             $add_data[] = [
@@ -656,5 +661,4 @@ class Orders_v2_entity{
         }
         return $img;
     }
-
 }