diff --git a/README.md b/README.md
index ad20675..51ee764 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ LCLogger.LogDelegate += (level, info) => {
 }
 ```
 
-## 用法
+## 数据存储
 
 ### 对象
 
@@ -55,6 +55,8 @@ obj["intValue"] = 123;
 await obj.Save();
 ```
 
+更多关于**对象**用法：[参考](https://github.com/leancloud/csharp-sdk/blob/master/Storage/Storage.Test/ObjectTest.cs)
+
 ### 查询
 
 ```csharp
@@ -63,6 +65,8 @@ query.Limit(2);
 List<LCObject> list = await query.Find();
 ```
 
+更多关于**查询**用法：[参考](https://github.com/leancloud/csharp-sdk/blob/master/Storage/Storage.Test/QueryTest.cs)
+
 ### 文件
 
 ```csharp
@@ -72,16 +76,67 @@ await file.Save((count, total) => {
 });
 ```
 
+更多关于**文件**用法：[参考](https://github.com/leancloud/csharp-sdk/blob/master/Storage/Storage.Test/FileTest.cs)
+
 ### 用户
 
 ```csharp
 await LCUser.Login("hello", "world");
 ```
 
+更多关于**用户**用法：[参考](https://github.com/leancloud/csharp-sdk/blob/master/Storage/Storage.Test/UserTest.cs)
+
 ### GeoPoint
 
 ```csharp
 LCGeoPoint p1 = new LCGeoPoint(20.0059, 110.3665);
 ```
 
+更多关于 **GeoPoint** 用法：[参考](https://github.com/leancloud/csharp-sdk/blob/master/Storage/Storage.Test/GeoTest.cs)
+
+## 即时通讯
+
+### 用户
+
+```csharp
+LCIMClient client = new LCIMClient("c1");
+// 登录
+await client.Open();
+// 注销
+await client.Close();
+```
+
+更多关于**用户**用法：[参考](https://github.com/leancloud/csharp-sdk/blob/master/Realtime/Realtime.Test/Client.cs)
+
+### 对话
+
+```csharp
+// 创建普通对话
+LCIMConversation conversation = await client.CreateConversation(new string[] { "world" }, name: name, unique: false);
+// 创建聊天室
+LCIMConversation chatroom = await client.CreateChatRoom(name);
+// 创建临时对话
+LCIMConversation tempConversation = await client.CreateTemporaryConversation(new string[] { "world" });
+```
+
+更多关于**对话**用法：[参考](https://github.com/leancloud/csharp-sdk/blob/master/Realtime/Realtime.Test/Conversation.cs)
+
+### 消息
+
+```csharp
+// 发送消息
+LCIMTextMessage textMessage = new LCIMTextMessage("hello, world");
+await conversation.Send(textMessage);
+// 接收消息
+m2.OnMessage = (conv, msg) => {
+    if (msg is LCIMTextMessage textMsg) {
+        WriteLine($"text: {textMsg.Text}");
+    }
+};
+```
+
+更多关于**对话**用法：[参考](https://github.com/leancloud/csharp-sdk/blob/master/Realtime/Realtime.Test/Message.cs)
+
+## 文档
+
 [API 文档](https://leancloud.github.io/csharp-sdk/html/index.html)