diff --git a/docs-2.0-en/14.client/3.nebula-cpp-client.md b/docs-2.0-en/14.client/3.nebula-cpp-client.md
index 05226d51032..2ea821356e9 100644
--- a/docs-2.0-en/14.client/3.nebula-cpp-client.md
+++ b/docs-2.0-en/14.client/3.nebula-cpp-client.md
@@ -2,7 +2,7 @@
 
 [NebulaGraph CPP](https://github.com/vesoft-inc/nebula-cpp/tree/{{cpp.branch}}) is a C++ client for connecting to and managing the NebulaGraph database.
 
-## Limitations
+## Prerequisites
 
 You have installed C++ and GCC 4.8 or later versions.
 
@@ -103,6 +103,10 @@ Compile the CPP file to an executable file, then you can use it. The following s
   $ LIBRARY_PATH=/usr/local/nebula/lib64:$LIBRARY_PATH g++ -std=c++11 SessionExample.cpp -I/usr/local/nebula/include -lnebula_graph_client -o session_example
   ```
 
+## API reference
+
+Click [here](https://vesoft-inc.github.io/nebula-cpp/release-3.4/annotated.html) to check the classes and functions provided by the CPP Client.
+
 ## Core of the example code
 
 Nebula CPP clients provide both Session Pool and Connection Pool methods to connect to NebulaGraph. Using the Connection Pool method requires users to manage session instances by themselves.
diff --git a/docs-2.0-zh/14.client/3.nebula-cpp-client.md b/docs-2.0-zh/14.client/3.nebula-cpp-client.md
index 7384d3088a8..03efb9b0fa7 100644
--- a/docs-2.0-zh/14.client/3.nebula-cpp-client.md
+++ b/docs-2.0-zh/14.client/3.nebula-cpp-client.md
@@ -2,7 +2,7 @@
 
 [NebulaGraph CPP](https://github.com/vesoft-inc/nebula-cpp/tree/{{cpp.branch}}) 是一款 C++ 语言的客户端，可以连接、管理 {{nebula.name}} 图数据库。
 
-## 使用限制
+## 前提条件
   
 请确保已安装 C++ 且 GCC 版本为 4.8 及以上。
 
@@ -103,6 +103,10 @@
   $ LIBRARY_PATH=/usr/local/nebula/lib64:$LIBRARY_PATH g++ -std=c++11 SessionExample.cpp -I/usr/local/nebula/include -lnebula_graph_client -o session_example
   ```
 
+## API 文档
+
+点击[此处](https://vesoft-inc.github.io/nebula-cpp/release-3.4/annotated.html)查看 CPP 客户端提供的各种类和方法。
+
 ## 核心代码
 
 NebulaGraph CPP 客户端提供 Session Pool 和 Connection Pool 两种方式连接 {{nebula.name}} 。使用 Connection Pool 需要用户自行管理 Session 实例。
diff --git a/docs-2.0-zh/14.client/4.nebula-java-client.md b/docs-2.0-zh/14.client/4.nebula-java-client.md
index 66e4e72d494..0bed6b0ed40 100644
--- a/docs-2.0-zh/14.client/4.nebula-java-client.md
+++ b/docs-2.0-zh/14.client/4.nebula-java-client.md
@@ -57,7 +57,8 @@
 
 如果没有 Maven 管理项目，请手动[下载 JAR 包](https://repo1.maven.org/maven2/com/vesoft/)进行安装。
 
-## API reference
+## API 文档
+
 
 点击[此处](https://vesoft-inc.github.io/nebula-java/release-3.6/annotated.html)查看 Java 客户端提供的各种类和方法。
 
diff --git a/docs-2.0-zh/14.client/5.nebula-python-client.md b/docs-2.0-zh/14.client/5.nebula-python-client.md
index 1f5aa4d9a61..d59210bc496 100644
--- a/docs-2.0-zh/14.client/5.nebula-python-client.md
+++ b/docs-2.0-zh/14.client/5.nebula-python-client.md
@@ -46,7 +46,7 @@ $ pip install nebula3-python==<version>
   $ pip install .
   ```
 
-## API reference
+## API 文档
 
 点击[此处](https://vesoft-inc.github.io/nebula-python/release-3.4/annotated.html)查看 Python 客户端提供的各种类和方法。