diff --git a/pages/cart/cart2/cart2.js b/pages/cart/cart2/cart2.js
index 4d499d8..0c1d7de 100644
--- a/pages/cart/cart2/cart2.js
+++ b/pages/cart/cart2/cart2.js
@@ -1087,7 +1087,7 @@ Page({
     var fw_price = 0, fp_price=0;
     item=item.config;
     //------按重量----------
-    if (goods_weight>0) {
+    if (goods_weight>=0) {
       fw_price =parseFloat(item['money']);
       if (goods_weight > item['first_weight']){
         var fw = goods_weight - item['first_weight'];