diff --git a/install.sh b/install.sh
index 6b542bc..1321348 100644
--- a/install.sh
+++ b/install.sh
@@ -246,7 +246,7 @@ domain_check(){
 }
 
 port_exist_check(){
-    if [[ 0 -eq `lsof -i:"$1" | wc -l` ]];then
+    if [[ 0 -eq `lsof -i:"$1" | grep -i "listen" | wc -l` ]];then
         echo -e "${OK} ${GreenBG} $1 端口未被占用 ${Font}"
         sleep 1
     else