diff --git a/packageC/pages/presell/cart/cart2_pre.js b/packageC/pages/presell/cart/cart2_pre.js
index 2570fec..65071be 100644
--- a/packageC/pages/presell/cart/cart2_pre.js
+++ b/packageC/pages/presell/cart/cart2_pre.js
@@ -4,7 +4,7 @@ var os = t.globalData.setting;
 var regeneratorRuntime = require('../../../../utils/runtime.js');
 var util_pay = require("../../../../utils/pay.js");
 const t_pay = require("../../../../utils/pay2.js");
-
+ 
 Page({
   data: {
     url: t.globalData.setting.url,
@@ -523,6 +523,10 @@ Page({
     if (this.data.bn_goods.yck_off == 2) {
       this.setData({ [txt]: 1 })
     } else if (this.data.bn_goods.yck_off == 1) {
+      // let atxt10 = "formData.prestore"; //预存金额
+      // this.setData({
+      //   [atxt10]:0
+      // })
       this.setData({ [txt]: 2 })
     }
     this.calculatePrice2()//计算金额
@@ -745,7 +749,7 @@ Page({
       var atxt = "formData.total_amount";
       th.setData({ [atxt]: total_m, })
       var order_m = total_m;
-
+      
       //预存金额使用参与计算
       if (th.data.udata && th.data.udata.Balance > 0 && order_m * 1 > 0) {
         if (!th.data.bn_goods.keyid) {
@@ -793,7 +797,7 @@ Page({
           good.pre_json = cart_yc.pre_json
           let yct1 = 'bn_goods.yck_off';
           let yct2 = 'bn_goods.yck';
-          let yct3 = 'bn_goods.yckid';
+          let yct3 = 'bn_goods.yckid'; 
           let yct4 = 'bn_goods.pre_json';
           th.setData({
             [yct1]: good.yck_off,
@@ -826,6 +830,22 @@ Page({
             // all_yck_arr.push(yck) //真实预存款抵扣金额
             // all_pre_json.push(good.pre_json)
             // all_prestore = parseFloat(all_prestore); //真实预存款抵扣金额总和
+          }else{
+            let yct1 = 'bn_goods.yck_off';
+            let yct2 = 'bn_goods.yck';
+            let yct3 = 'bn_goods.yckid';
+            let yct4 = 'bn_goods.pre_json';
+            let atxt10 = "formData.prestore"; //预存金额
+            let atxt11 = "formData.pre_json"; //预存json
+            let atxt12 = "formData.all_yck_arr"; //预存真实抵扣列表
+            th.setData({
+              [yct2]: 0,
+              [yct3]: '',
+              [yct4]: '',
+              [atxt10]: 0,
+              [atxt11]: '',
+              [atxt12]: [],
+            })
           }
         }
       } else {
@@ -845,13 +865,13 @@ Page({
           [atxt12]: [],
         })
       }
-
+      
       var txt = "formData.user_money";
       var txt2 = "formData.order_amount";
       //--------------如果使用余额---------------------
       if (th.data.bn_use_money == 1 && th.data.yuer > 0) {
-        if (parseFloat(th.data.yuer) > total_m) {
-          th.setData({ [txt]: total_m, [txt2]: 0 })
+        if (parseFloat(th.data.yuer) > order_m) {
+          th.setData({ [txt]: order_m, [txt2]: 0 })
         } else {
           order_m = parseFloat(order_m) - parseFloat(th.data.yuer);
           order_m = order_m.toFixed(2);