diff --git a/README.md b/README.md
index 17e5ac0..1fa1e3d 100644
--- a/README.md
+++ b/README.md
@@ -1,25 +1,35 @@
-see demo
-```php
-try{
-    $api = new TLSSigAPI();
-    $api->SetAppid(1);//设置在腾讯云申请的appid
-    $private = file_get_contents(dirname(__FILE__).DIRECTORY_SEPARATOR.'ec_key.pem');
-    $api->SetPrivateKey($private);//生成usersig需要先设置私钥
-    $public = file_get_contents(dirname(__FILE__).DIRECTORY_SEPARATOR.'public.pem');
-    $api->SetPublicKey($public);//校验usersig需要先设置公钥
-    $sig = $api->genSig('user1');//生成usersig
-    $result = $api->verifySig($sig, 'user1', $init_time, $expire_time, $error_msg);//校验usersig
-    var_dump($result);
-    var_dump($init_time);
-    var_dump($expire_time);
-    var_dump($error_msg);
-    
-    $result = $api->verifySig($sig, 'user2', $init_time, $expire_time, $error_msg);
-    var_dump($result);
-    var_dump($init_time);
-    var_dump($expire_time);
-    var_dump($error_msg);
-}catch(\Exception $e){
-    echo $e->getMessage();
+## composer 集成
+```json
+{
+  "require": {
+    "tencent/tls-sig-api": "1.0"
+  }
 }
 ```
+
+
+## 调用接口
+
+### 默认过期时间
+```php
+require 'vendor/autoload.php';
+
+$api = new Tencent\TLSSigAPI();
+$api->SetAppid(140000000);
+$private = file_get_contents(dirname(__FILE__).DIRECTORY_SEPARATOR.'private_key');
+$api->SetPrivateKey($private);
+$sig = $api->genSig('xiaojun');
+var_export($sig);
+```
+
+### 指定过期时间
+```php
+require 'vendor/autoload.php';
+
+$api = new Tencent\TLSSigAPI();
+$api->SetAppid(140000000);
+$private = file_get_contents(dirname(__FILE__).DIRECTORY_SEPARATOR.'private_key');
+$api->SetPrivateKey($private);
+$sig = $api->genSig('xiaojun', 24*3600*180);
+var_export($sig);
+```
\ No newline at end of file