diff --git a/payment.php b/payment.php
index 13a56fbde..73bb2f857 100644
--- a/payment.php
+++ b/payment.php
@@ -23,6 +23,7 @@ define('FONTS',dirname(__FILE__).'/Public/Admin/fonts/');
  * 安全期间，建议安装调试完成后移动到非WEB目录
  */
 define ( 'APP_PATH', './Application/' );
+define ( 'SUBSITE_INDEX', "payment.php" );//子站点路口，影响session
 
 if(!is_file(APP_PATH . 'User/Conf/config.php')){
 	header('Location: ./install.php');