diff --git a/pages/cart/cart.js b/pages/cart/cart.js
index d910d13..674f7ff 100644
--- a/pages/cart/cart.js
+++ b/pages/cart/cart.js
@@ -1,4 +1,5 @@
 const district = require('../../utils/address_data.js')
+const product = require('../../utils/product.js')
 
 Page({
   data: {
@@ -16,8 +17,8 @@ Page({
     var cartItems = wx.getStorageSync("cartItems")
     this.setData({cartItems: cartItems})
 
-    var detailAddress = wx.getStorageSync('detailAddress')
-    var receiverName = wx.getStorageSync('receiverName')
+    var detailAddress  = wx.getStorageSync('detailAddress')
+    var receiverName   = wx.getStorageSync('receiverName')
     var receiverMobile = wx.getStorageSync('receiverMobile')
     var address = {detail: detailAddress, name: receiverName, mobile: receiverMobile}
 
@@ -69,9 +70,19 @@ Page({
     })
   },
 
-  // bindBilling: function () {
-  //   var cartItems = wx.getStorageSync('cartItems')
-  // },
+  bindBilling: function () {
+    var cartItems = wx.getStorageSync('cartItems')
+    if (cartItems) {
+      var cartArray = cartItems.map(function(obj){ 
+        var rObj = {};
+        rObj['id'] = obj.id;
+        rObj['quantity'] = obj.quantity;
+        return rObj;
+      });
+      product.postBilling({items: cartArray,
+                           address: this.data.address})
+    }
+  },
 
   bindTapAddress () {
     wx.navigateTo({
diff --git a/pages/cart/cart.wxml b/pages/cart/cart.wxml
index 97717de..05c7e1a 100644
--- a/pages/cart/cart.wxml
+++ b/pages/cart/cart.wxml
@@ -43,7 +43,7 @@
 
 
 <view class="billing-btn">
-  <button class="button" type='warn'> 去支付 </button>
+  <button class="button" type='warn' bindtap="bindBilling"> 去支付 </button>
 </view>
 
 
diff --git a/pages/show_product/show_product.js b/pages/show_product/show_product.js
index 4c1d28d..57bdf3e 100644
--- a/pages/show_product/show_product.js
+++ b/pages/show_product/show_product.js
@@ -6,13 +6,11 @@ Page({
     toastAddProduct: true,
     title: '',
     id: 0,
-    address: '',
     quantity: 1,
     product: {}
   },
 
   onShow () {
-    this.setData({'address': Date.now()})
   },
 
   onLoad (params) {
diff --git a/utils/product.js b/utils/product.js
index de990a0..ead6f66 100644
--- a/utils/product.js
+++ b/utils/product.js
@@ -12,18 +12,6 @@ function getProducts (data) {
   })
 }
 
-function postBuyProduct (data) {
-  return new Promise((resolve, reject) => {
-    wx.request({
-        url: `${API_URL}/products/buy`,
-        data: Object.assign({}, data),
-        header: { 'Content-Type': 'application/json' },
-        success: resolve,
-        fail: reject
-    })
-  })
-}
-
 function getSlides () {
   return new Promise((resolve, reject) => {
     wx.request({
@@ -39,7 +27,7 @@ function postBilling (data) {
   return new Promise((resolve, reject) => {
     wx.request({
       method: 'POST',
-      url: `${API_URL}/cart/billing`,
+      url: `${API_URL}/carts/billings`,
       data: data,
       header: { 'Content-Type': 'application/json'},
       success: resolve,