diff --git a/docs/en/14-reference/08-taos-shell.md b/docs/en/14-reference/08-taos-shell.md
index 7833ac861f..e66da7ec17 100644
--- a/docs/en/14-reference/08-taos-shell.md
+++ b/docs/en/14-reference/08-taos-shell.md
@@ -61,12 +61,14 @@ And many more parameters.
 - -c CONFIGDIR: Specify the directory where configuration file exists. The default is `/etc/taos`, and the default name of the configuration file in this directory is `taos.cfg`
 - -C: Print the configuration parameters of `taos.cfg` in the default directory or specified by -c
 - -d DATABASE: Specify the database to use when connecting to the server
+- -E dsn: connect to the TDengine Cloud or a server which provides WebSocket connection
 - -f FILE: Execute the SQL script file in non-interactive mode Note that each SQL statement in the script file must be only one line.
 - -k: Test the operational status of the server. 0: unavailable; 1: network ok; 2: service ok; 3: service degraded; 4: exiting
 - -l PKTLEN: Test package size to be used for network testing
 - -n NETROLE: test scope for network connection test, default is `client`. The value can be `client` or `server`.
 - -N PKTNUM: Number of packets used for network testing
 - -r: output the timestamp format as unsigned 64-bits integer (uint64_t in C language)
+- -R: Use RESTful mode when connecting
 - -s COMMAND: execute SQL commands in non-interactive mode
 - -t: Test the boot status of the server. The statuses of -k apply.
 - -w DISPLAYWIDTH: Specify the number of columns of the server display.
diff --git a/docs/zh/14-reference/08-taos-shell.md b/docs/zh/14-reference/08-taos-shell.md
index 5ac5f6f479..3423cf35bb 100644
--- a/docs/zh/14-reference/08-taos-shell.md
+++ b/docs/zh/14-reference/08-taos-shell.md
@@ -61,12 +61,14 @@ taos> SET MAX_BINARY_DISPLAY_WIDTH <nn>;
 - -c CONFIGDIR: 指定配置文件目录，Linux 环境下默认为 `/etc/taos`，该目录下的配置文件默认名称为 `taos.cfg`
 - -C: 打印 -c 指定的目录中 `taos.cfg` 的配置参数
 - -d DATABASE: 指定连接到服务端时使用的数据库
+- -E dsn: 使用 WebSocket DSN 连接云服务或者提供 WebSocket 连接的服务端
 - -f FILE: 以非交互模式执行 SQL 脚本文件。文件中一个 SQL 语句只能占一行
 - -k: 测试服务端运行状态，0: unavailable，1: network ok，2: service ok，3: service degraded，4: exiting
 - -l PKTLEN: 网络测试时使用的测试包大小
 - -n NETROLE: 网络连接测试时的测试范围，默认为 `client`, 可选值为 `client`、`server`
 - -N PKTNUM: 网络测试时使用的测试包数量
 - -r: 将时间输出出无符号 64 位整数类型(即 C 语音中 uint64_t)
+- -R: 使用 RESTful 模式连接服务端
 - -s COMMAND: 以非交互模式执行的 SQL 命令
 - -t: 测试服务端启动状态，状态同-k
 - -w DISPLAYWIDTH: 客户端列显示宽度
diff --git a/tools/shell/src/shellArguments.c b/tools/shell/src/shellArguments.c
index 636138fac7..25c3c76b54 100644
--- a/tools/shell/src/shellArguments.c
+++ b/tools/shell/src/shellArguments.c
@@ -58,8 +58,8 @@
 #define SHELL_VERSION  "Print program version."
 
 #ifdef WEBSOCKET
-#define SHELL_DSN      "The dsn to use when connecting to cloud server."
-#define SHELL_REST     "Use restful mode when connecting."
+#define SHELL_DSN      "Use dsn to connect to the TDengine cloud server or to a remote server which provides WebSocket connection."
+#define SHELL_REST     "Use RESTful mode when connecting."
 #define SHELL_TIMEOUT  "Set the timeout for websocket query in seconds, default is 10."
 #endif
 
@@ -126,7 +126,7 @@ static struct argp_option shellOptions[] = {
     {"pktlen", 'l', "PKTLEN", 0, SHELL_PKT_LEN},
 #ifdef WEBSOCKET
     {"dsn", 'E', "DSN", 0, SHELL_DSN},
-    {"restful", 'R', 0, 0, SHELL_REST},
+    {"http", 'R', 0, 0, SHELL_REST},
 	  {"timeout", 'T', "SECONDS", 0, SHELL_TIMEOUT},
 #endif
     {"pktnum", 'N', "PKTNUM", 0, SHELL_PKT_NUM},