diff --git a/tools/pay_backend.py b/tools/pay_backend.py
index eff0ce1..9289c79 100644
--- a/tools/pay_backend.py
+++ b/tools/pay_backend.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 
 import os
+import sys
 import json
 import time
 import datetime
diff --git a/webapp/controller/PayController.class.php b/webapp/controller/PayController.class.php
index eb762fb..5818533 100644
--- a/webapp/controller/PayController.class.php
+++ b/webapp/controller/PayController.class.php
@@ -85,6 +85,9 @@ class PayController {
             $amount = $jsonobj['price'];
             $itemid = $jsonobj['itemid'];
             $itemnum = $jsonobj['itemnum'];
+            if (SERVER_ENV != _ONLINE) {
+                $amount = 0.01;
+            }
         }
         $orderid = $this->getOrderId();
         if (empty($orderid)) {