diff --git a/scripts/install_cn.sh b/scripts/install_cn.sh
index 3409557f1..43ba9cf78 100755
--- a/scripts/install_cn.sh
+++ b/scripts/install_cn.sh
@@ -75,7 +75,9 @@ echo "use system version: ${OSNAME}"
 curl -fsSL  https://gitee.com/midoks/mdserver-web/raw/master/scripts/install/${OSNAME}.sh | bash
 
 chmod +x /www/server/mdserver-web/mw-cli
-ln -s /www/server/mdserver-web/mw-cli /usr/bin/mw-cli
+if [ ! -e /usr/bin/mw-cli ]; then 
+	ln -s /www/server/mdserver-web/mw-cli /usr/bin/mw-cli
+fi
 
 endTime=`date +%s`
 ((outTime=(${endTime}-${startTime})/60))