diff --git a/run.sh b/run.sh
index 65e850d..2fd326c 100644
--- a/run.sh
+++ b/run.sh
@@ -3,4 +3,23 @@
 export PORT=2233
 export webClient=http://localhost:5000
 
-nohup yarn start &
+function run(){
+  nohup yarn start &
+  findPortPid $PORT>$PORT.log
+}
+
+if [ -e *.pid ]
+then
+  pid=`stat *.pid|awk 'NR>1{next}{c=$0;gsub(/\D/,"",c);print c}'`
+  kill -9 pid
+  if [ $? -eq 0 ]
+  then
+    echo 'kill $pid success'
+    rm -f *.pid
+    run()
+  else
+    echo 'kill $pid error'
+else
+  run()
+fi
+