diff --git a/scripts/update_new.sh b/scripts/update_new.sh
index 7c4d2ebd6..1f8caa7aa 100755
--- a/scripts/update_new.sh
+++ b/scripts/update_new.sh
@@ -6,6 +6,13 @@ is64bit=`getconf LONG_BIT`
 
 startTime=`date +%s`
 
+if [ -f /www/server/mdserver-web/tools.py ];then
+	echo -e "存在旧版代码,不能安装!,已知风险的情况下" 
+	echo -e "rm -rf /www/server/mdserver-web"
+	echo -e "可安装!" 
+	exit 0
+fi
+
 _os=`uname`
 echo "use system: ${_os}"