diff --git a/README.md b/README.md
index e88923c..57f7705 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,23 @@
 # ali_ecc_js
 
-阿里云盘 签名 js版
+#阿里云盘 签名 js版
+
+###install the packages
+
+`
+npm install
+`
+### set the user data and file_id
+. deviceId
+
+. userId
+
+. drive_id
+
+. authorization
+
+. file_id
+### run
+`
+npm start
+`
diff --git a/ali.js b/ali.js
index 5c68384..bc63a86 100644
--- a/ali.js
+++ b/ali.js
@@ -10,7 +10,7 @@ const userData = {
 	publicKey: "",
 	signatureData: "",
     drive_id:"6xxxx93", // DevTools -> Application -> Local Storage -> cna
-    authorization: "Bearer xxxxxxxxxx"  // Request Headers -> authorization
+    authorization: ""  // Request Headers -> authorization   Bearer xxxxxxxxxx
 }
 
 const headers = { 
@@ -59,7 +59,7 @@ const DownloadFile = (file_id) => {
         headers: {...headers},
     });
 }
-const  InitAliKey = async () => {
+const  InitAliKey = () => {
     const {appId, deviceId, userId, nonce} = userData;
 	const max = 32;
 	const privKey = randomString(max);
@@ -82,7 +82,10 @@ const  InitAliKey = async () => {
 
 const main = async () => {
     InitAliKey();
-    if(!userData.publicKey || !headers['x-signature'] || !userData.authorization) return;
+    if(!userData.publicKey || !headers['x-signature'] || !userData.authorization) {
+        console.log('need set the userdata');
+        return
+    }
     const session = await CreateSession();
     console.log(session.data) // { result: true, success: true, code: null, message: null }
     // file_id
diff --git a/package.json b/package.json
index 3f11ff9..f9ab79b 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,7 @@
   "description": "",
   "main": "ali.js",
   "scripts": {
+    "start": "node ali.js",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "author": "fly1397@sina.com",