diff --git a/hexo_run.js b/hexo_run.js
index 540f9d2..2ad6f7d 100644
--- a/hexo_run.js
+++ b/hexo_run.js
@@ -1,6 +1,6 @@
 //run
 const { exec } = require('child_process')
-exec('hexo server -p 4000',(error, stdout, stderr) => {
+exec('hexo server -p ${HEXO_SERVER_PORT}',(error, stdout, stderr) => {
         if(error){
                 console.log('exec error: ${error}')
                 return