diff --git a/README.md b/README.md
index 0e69658..3ee2013 100644
--- a/README.md
+++ b/README.md
@@ -1,58 +1,96 @@
-### 初始化
+### It is recommended that you use the test server first
 
-建议优先用测试服务器
+Online interface testing[https://www.bitmex.com/api/explorer/](https://www.bitmex.com/api/explorer/)
 
-在线接口测试[https://www.bitmex.com/api/explorer/](https://www.bitmex.com/api/explorer/)
+Address of the test[https://testnet.bitmex.com](https://testnet.bitmex.com)
 
-测试服务器[https://testnet.bitmex.com](https://testnet.bitmex.com)
+The official address[https://www.bitmex.com](https://www.bitmex.com)
 
-正式服务器[https://www.bitmex.com](https://www.bitmex.com)
+All interface methods are initialized the same as those provided by bitmex. See details[src/api](https://github.com/zhouaini528/bitmex-php/tree/master/src/Api)
 
-所有的接口方式初始化与bitmex提供的接口方式一样，详细请看src/api
+Many interfaces are not yet complete, and users can continue to extend them based on my design. Feel free to iterate with me.
 
-行情数据初始化
+[中文文档](https://github.com/zhouaini528/bitmex-php/blob/master/README_CN.md)
+
+Book Data[more](https://github.com/zhouaini528/bitmex-php/blob/master/tests/position.php)
 ```php
-//$host 可以不传入，默认正式服务器访问；
-$order=new \Lin\Bitmex\Api\OrderBook();
-$rlt=$order->get();
-print_r($rlt);
-//功能多API请查看API
+//Get market data
+//Market parameters can not key and secret
+try {
+    $bitmex=new Bitmex();
+    $result=$bitmex->orderBook()->get([
+        'symbol'=>'ETHUSD',
+        'depth'=>20
+    ]);
+    print_r($result);
+}catch (\Exception $e){
+    print_r(json_decode($e->getMessage(),true));
+}
 ```
 
-订单类的初始化
+Order[more](https://github.com/zhouaini528/bitmex-php/blob/master/tests/order.php)
 ```php
-//$host 可以不传入，默认正式服务器访问；
-$order=new \Lin\Bitmex\Api\Order($key, $secret, $host);
-//订单查询
-$rlt=$order->get([
-    'symbol'=>'ADAZ18',
-]);
-print_r($rlt);
-
-//创建新订单
-$data=[
-    'symbol'=>'ADAZ18',
-    'price'=>'0.00001196',
-    'orderQty'=>'10',
-    'ordType'=>'Limit',
-];
-$rlt=$order->post($data);
-print_r($rlt);
-
-//功能多API请查看API
+//Test API address  default  https://www.bitmex.com
+$key='eLB_l505a_cuZL8Cmu5uo7EP';
+$secret='wG3ndMquAPl6c-jHUQNhyBQJKGBwdFenIF2QxcgNKE_g8Kz3';
+$host='https://testnet.bitmex.com';
+
+$bitmex=new Bitmex($key,$secret,$host);
+
+//bargaining transaction
+try {
+    $result=$bitmex->order()->post([
+        'symbol'=>'XBTUSD',
+        'price'=>'100',
+        'side'=>'Buy',
+        'orderQty'=>'1',
+        'ordType'=>'Limit',
+    ]);
+    print_r($result);
+}catch (\Exception $e){
+    print_r(json_decode($e->getMessage(),true));
+}
+
+//track the order
+try {
+    $result=$bitmex->order()->getOne([
+        'symbol'=>'XBTUSD',
+        'orderID'=>$result['orderID'],
+    ]);
+    print_r($result);
+}catch (\Exception $e){
+    print_r(json_decode($e->getMessage(),true));
+}
+
+//cancellation of order
+try {
+    $result=$bitmex->order()->delete([
+        'symbol'=>'XBTUSD',
+        'orderID'=>$result['orderID'],
+    ]);
+    print_r($result);
+}catch (\Exception $e){
+    print_r(json_decode($e->getMessage(),true));
+}
 ```
 
 
-用户类的初始化
+Postion[more](https://github.com/zhouaini528/bitmex-php/blob/master/tests/position.php)
 ```php
-//$host 可以不传入，默认正式服务器访问；
-$user=new \Lin\Bitmex\Api\User($key, $secret, $host);
+//bargaining transaction
+try {
+    $bitmex=new Bitmex($key,$secret,$host);
+    $result=$bitmex->position()->get([
+        'symbol'=>'XBTUSD',
+    ]);
+    print_r($result);
+}catch (\Exception $e){
+    print_r(json_decode($e->getMessage(),true));
+}
+```
 
-//订单查询
-$rlt=$user->get();
-print_r($rlt);
+[More use cases](https://github.com/zhouaini528/bitmex-php/tree/master/tests)
 
-//功能多API请查看API
-```
+[More API](https://github.com/zhouaini528/bitmex-php/tree/master/src/Api)