diff --git a/README.md b/README.md
index 93051a26cbd35498e9721f7242c4d5b3e53831d1..af53312956c48bc01da6516c6091cd33cd864da9 100644
--- a/README.md
+++ b/README.md
@@ -146,12 +146,17 @@ Users can start IoTDB by the start-server script under the sbin folder.
 
 ```
 # Unix/OS X
-> sbin/start-server.sh
+> sbin/start-server.sh -c <conf_path> -rpc_port <rpc_port>
 
 # Windows
-> sbin\start-server.bat
+> sbin\start-server.bat -c <conf_path> -rpc_port <rpc_port>
 ```
 
+- "-c" and "-rpc_port" are optional.
+- option "-c" specifies the system configuration file directory.
+- option "-rpc_port" specifies the rpc port.
+- if both option specified, the *rpc_port* will overrides the rpc_port in *conf_path*.
+
 
 ### Use IoTDB
 
diff --git a/README_ZH.md b/README_ZH.md
index fe704a887722238246bd9929a7a2660ae762e3f7..a1f0fcf41fedc0ab5f0f7f2d511f5045bcde216e 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -143,11 +143,15 @@ git checkout release/x.x.x
 
 ```
 # Unix/OS X
-> sbin/start-server.sh
+> sbin/start-server.sh -c <conf_path> -rpc_port <rpc_port>
 
 # Windows
-> sbin\start-server.bat
+> sbin\start-server.bat -c <conf_path> -rpc_port <rpc_port>
 ```
+- "-c" and "-rpc_port" 都是可选的。
+- 选项 "-c" 指定了配置文件所在的文件夹。
+- 选项 "-rpc_port" 指定了启动的 rpc port。
+- 如果两个选项同时指定，那么*rpc_port*将会覆盖*conf_path*下面的配置。
 
 ### 使用 IoTDB
 
diff --git a/docs/UserGuide/0-Get Started/1-QuickStart.md b/docs/UserGuide/0-Get Started/1-QuickStart.md
index 89a1b02f0b05304aa9c1d21a3ca163643a189842..6a8b1fed7843133e620b42f8cdfb75548c74b805 100755
--- a/docs/UserGuide/0-Get Started/1-QuickStart.md	
+++ b/docs/UserGuide/0-Get Started/1-QuickStart.md	
@@ -84,12 +84,17 @@ Users can start IoTDB by the start-server script under the sbin folder.
 
 ```
 # Unix/OS X
-> sbin/start-server.sh
+> sbin/start-server.sh -c <conf_path> -rpc_port <rpc_port>
 
 # Windows
-> sbin\start-server.bat
+> sbin\start-server.bat -c <conf_path> -rpc_port <rpc_port>
 ```
 
+- "-c" and "-rpc_port" are optional.
+- option "-c" specifies the system configuration file directory.
+- option "-rpc_port" specifies the rpc port.
+- if both option specified, the *rpc_port* will overrides the rpc_port in *conf_path*.
+
 if you want to use JMX to connect IOTDB, you may need to add 
 
 ```
diff --git a/docs/UserGuide/3-Server/2-Single Node Setup.md b/docs/UserGuide/3-Server/2-Single Node Setup.md
index 4cd994f6acf3f02cd8b4805ff50109938e94e411..b21dcb5943312efa363e199938ba712fb4af4844 100644
--- a/docs/UserGuide/3-Server/2-Single Node Setup.md	
+++ b/docs/UserGuide/3-Server/2-Single Node Setup.md	
@@ -25,8 +25,12 @@ Users can start IoTDB by the start-server script under the sbin folder.
 
 ```
 # Unix/OS X
-> sbin/start-server.sh
+> sbin/start-server.sh -c <conf_path> -rpc_port <rpc_port>
 
 # Windows
-> sbin\start-server.bat
-```
\ No newline at end of file
+> sbin\start-server.bat -c <conf_path> -rpc_port <rpc_port>
+```
+- "-c" and "-rpc_port" are optional.
+- option "-c" specifies the system configuration file directory.
+- option "-rpc_port" specifies the rpc port.
+- if both option specified, the *rpc_port* will overrides the rpc_port in *conf_path*.
\ No newline at end of file
diff --git a/docs/zh/UserGuide/0-Get Started/1-QuickStart.md b/docs/zh/UserGuide/0-Get Started/1-QuickStart.md
index 134c21a8fc78bcb1a3aad9cfdb3996664474a418..941910e9b4ae57afdc83fa9ab00ee5f6c1a49c4e 100755
--- a/docs/zh/UserGuide/0-Get Started/1-QuickStart.md	
+++ b/docs/zh/UserGuide/0-Get Started/1-QuickStart.md	
@@ -86,14 +86,18 @@ IoTDB支持多种安装途径。用户可以使用三种方式对IoTDB进行安
 Linux系统与MacOS系统启动命令如下：
 
 ```
-> sbin/start-server.sh
+> sbin/start-server.sh -c <conf_path> -rpc_port <rpc_port>
 ```
 
 Windows系统启动命令如下：
 
 ```
-> sbin\start-server.bat
+> sbin\start-server.bat -c <conf_path> -rpc_port <rpc_port>
 ```
+- "-c" and "-rpc_port" 都是可选的。
+- 选项 "-c" 指定了配置文件所在的文件夹。
+- 选项 "-rpc_port" 指定了启动的 rpc port。
+- 如果两个选项同时指定，那么*rpc_port*将会覆盖*conf_path*下面的配置。
 
 
 ### 操作IoTDB
diff --git a/docs/zh/UserGuide/3-Server/2-Single Node Setup.md b/docs/zh/UserGuide/3-Server/2-Single Node Setup.md
index ad520fbe06402944a3020eb00720873b1e1591ab..17874dcc077c7c1a0ea6c4221346fe6d69d65447 100644
--- a/docs/zh/UserGuide/3-Server/2-Single Node Setup.md	
+++ b/docs/zh/UserGuide/3-Server/2-Single Node Setup.md	
@@ -25,8 +25,13 @@
 
 ```
 # Unix/OS X
-> sbin/start-server.sh
+> sbin/start-server.sh -c <conf_path> -rpc_port <rpc_port>
 
 # Windows
-> sbin\start-server.bat
-```
\ No newline at end of file
+> sbin\start-server.bat -c <conf_path> -rpc_port <rpc_port>
+```
+
+- "-c" and "-rpc_port" 都是可选的。
+- 选项 "-c" 指定了配置文件所在的文件夹。
+- 选项 "-rpc_port" 指定了启动的 rpc port。
+- 如果两个选项同时指定，那么*rpc_port*将会覆盖*conf_path*下面的配置。
\ No newline at end of file