diff --git a/public/main.js b/public/main.js
index 061e749..a09fa44 100644
--- a/public/main.js
+++ b/public/main.js
@@ -1,5 +1,5 @@
-import disableDevtool from '../src';
-// import disableDevtool from '../npm';
+// import disableDevtool from '../src';
+import disableDevtool from '../npm';
 
 disableDevtool({
     md5: 'd4de605ccb923b7e876b3218a1474653',
@@ -9,6 +9,7 @@ disableDevtool({
     // },
     interval: 1000,
     tkName: 'xx',
+    // url: 'https://www.baidu.com'
 });
 
 console.log(disableDevtool.version);
diff --git a/src/main.js b/src/main.js
index 8b26344..60f2de5 100644
--- a/src/main.js
+++ b/src/main.js
@@ -17,7 +17,10 @@ export function disableDevtool (opts) {
 disableDevtool.md5 = md5;
 disableDevtool.version = version;
 
+let hasOpened = false;
 export function onDevToolOpen () {
+    if (hasOpened) {return;}
+    hasOpened = true;
     clearTimeout();
     config.ondevtoolopen();
 }
diff --git a/src/version.js b/src/version.js
index 833a534..69b17f2 100644
--- a/src/version.js
+++ b/src/version.js
@@ -1 +1 @@
-export default '0.0.3';
\ No newline at end of file
+export default '0.0.4';
\ No newline at end of file