diff --git a/pages/cart/cart2_pt/cart2_pt.js b/pages/cart/cart2_pt/cart2_pt.js
index 56341a8..680b6cf 100644
--- a/pages/cart/cart2_pt/cart2_pt.js
+++ b/pages/cart/cart2_pt/cart2_pt.js
@@ -793,7 +793,7 @@ Page({
     item=item.config;
 	if (item == null) return o_shipping_price;
     //------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'];