diff --git a/pages/goods/goodsInfo/goodsInfo.js b/pages/goods/goodsInfo/goodsInfo.js
index e238210..0ca5cc1 100644
--- a/pages/goods/goodsInfo/goodsInfo.js
+++ b/pages/goods/goodsInfo/goodsInfo.js
@@ -911,7 +911,7 @@ Page({
 
         //-- 要清空，因为有回退。优惠促的数组,购买数量要清理成1 --
         this.data.cx_prom_group=[];
-        this.data.goodsInputNum=1;
+        this.setData({goodsInputNum:1});
 
         var goods_list = null,
           th = this,