diff --git a/webapp/controller/ShopController.class.php b/webapp/controller/ShopController.class.php
index 529506d8..35cb0e13 100644
--- a/webapp/controller/ShopController.class.php
+++ b/webapp/controller/ShopController.class.php
@@ -141,11 +141,12 @@ class ShopController extends BaseAuthedController {
         $need_price = $price_array[$token_pos];
         $discount = $discount_array[$token_pos];
 
-        $discount_begin = $row['discount_begin'];
-        $discount_end = $row['discount_end'];
+        $discount_begin = strtotime($row['discount_begin'].' UTC');
+        $discount_end = strtotime($row['discount_end'].' UTC');
         $nowTime = $this->_getNowTime();
-
+        
         if ($nowTime>=$discount_begin && $nowTime<$discount_end) {
+            
             $need_price = ceil($need_price * ($discount / 100.0));
         }