diff --git a/docs/cn/source/reference/qsctl-cp.rst b/docs/cn/source/reference/qsctl-cp.rst
index b038e691..b6333f3e 100644
--- a/docs/cn/source/reference/qsctl-cp.rst
+++ b/docs/cn/source/reference/qsctl-cp.rst
@@ -18,6 +18,7 @@ qsctl-cp
     [-r, --recursive]
     [--exclude]
     [--include]
+    [--rate-limit]
 
 ====
 描述
@@ -49,6 +50,10 @@ qsctl-cp
 
 包含匹配特定类型的文件（对象）。
 
+``--rate-limit``
+
+网速限制,单位可以为: K/M/G，如: 100K 、 1M。
+
 ====
 示例
 ====
@@ -88,3 +93,21 @@ qsctl-cp
 
     File 'test/test1.txt' written
     File 'test/test2.txt' written
+
+下面的 ``cp`` 命令将一个本地文件复制到 ``mybucket``，并限制速度为每秒 100K::
+
+    $ qsctl cp test.txt qs://mybucket --rate-limit 100K
+
+输出::
+
+    Key <test.txt> created
+    File 'test.txt' deleted
+
+下面的 ``cp`` 命令将 ``mybucket`` 下的所有对象复制到本地，并限制速度为每秒 100K::
+
+    $ qsctl cp qs://mybucket test/ -r --rate-limit 100K
+
+输出::
+
+    File 'test/test1.txt' written
+    File 'test/test2.txt' written
diff --git a/docs/cn/source/reference/qsctl-mv.rst b/docs/cn/source/reference/qsctl-mv.rst
index eedb4aa7..c12d66a4 100644
--- a/docs/cn/source/reference/qsctl-mv.rst
+++ b/docs/cn/source/reference/qsctl-mv.rst
@@ -18,6 +18,7 @@ qsctl-mv
     [-r, --recursive]
     [--exclude]
     [--include]
+    [--rate-limit]
 
 ====
 描述
@@ -27,7 +28,7 @@ qsctl-mv
 是目标地址。
 
 注意： ``mv`` 命令将会删除源文件（对象），如果你不想删除源文件（对象），请
-使用 ``mv`` 命令。
+使用 ``cp`` 命令。
 
 如果要传的文件（对象）目标地址已存在，程序将会询问覆盖或跳过。你可以使用
 ``--force`` 选项强制覆盖。
@@ -52,6 +53,10 @@ qsctl-mv
 
 包含匹配特定类型的文件（对象）。
 
+``--rate-limit``
+
+网速限制,单位可以为: K/M/G ,如: 100K 、 1M
+
 ====
 示例
 ====
@@ -97,3 +102,21 @@ qsctl-mv
     File 'test/test2.txt' written
     Key <test/test1.txt> deleted
     Key <test/test2.txt> deleted
+
+下面的 ``mv`` 命令将一个本地文件移动到 ``mybucket``，并限制速度为每秒 100K::
+
+    $ qsctl mv test.txt qs://mybucket --rate-limit 100K
+
+输出::
+
+    Key <test.txt> created
+    File 'test.txt' deleted
+
+下面的 ``mv`` 命令将 ``mybucket`` 下的所有对象移动到本地，并限制速度为每秒 100K::
+
+    $ qsctl mv qs://mybucket test/ -r --rate-limit 100K
+
+输出::
+
+    File 'test/test1.txt' written
+    File 'test/test2.txt' written
diff --git a/docs/cn/source/reference/qsctl-sync.rst b/docs/cn/source/reference/qsctl-sync.rst
index a681c256..3664dc4e 100644
--- a/docs/cn/source/reference/qsctl-sync.rst
+++ b/docs/cn/source/reference/qsctl-sync.rst
@@ -17,6 +17,7 @@ qsctl-sync
     [--delete]
     [--exclude]
     [--include]
+    [--rate-limit]
 
 ====
 描述
@@ -44,6 +45,10 @@ qsctl-sync
 
 包含匹配特定类型的文件（对象）。
 
+``--rate-limit``
+
+网速限制,单位可以为: K/M/G，如: 100K 、 1M。
+
 ====
 示例
 ====
@@ -78,3 +83,22 @@ qsctl-sync
     File 'test/test1.txt' written
     File 'test/test2.txt' written
     File 'test/test3.txt' deleted
+
+下面的 ``sync`` 命令将同步本地当前文件夹到 ``mybucket``，并限制速度为每秒 100K::
+
+    $ qsctl sync . qs://mybucket --rate-limit 100K
+
+输出::
+
+    Key <test1.txt> created
+    Key <test2.txt> created
+    Key <test3.txt> created
+
+下面的 ``sync`` 命令将同步 ``QS-Directory`` 到本地，并限制速度为每秒 100K::
+
+    $ qsctl sync qs://mybucket/test/ test/ --rate-limit 100K
+
+输出::
+
+    File 'test/test1.txt' written
+    File 'test/test2.txt' written
diff --git a/qingstor/qsctl/helper/source/qsctl-cp.rst b/qingstor/qsctl/helper/source/qsctl-cp.rst
index b3cd2b68..873ed82f 100644
--- a/qingstor/qsctl/helper/source/qsctl-cp.rst
+++ b/qingstor/qsctl/helper/source/qsctl-cp.rst
@@ -18,6 +18,7 @@ Synopsis
     [-r, --recursive]
     [--exclude]
     [--include]
+    [--rate-limit]
 
 ===========
 Description
@@ -49,6 +50,11 @@ Exclude all keys or files that match the specified pattern.
 
 Do not exclude keys or files that match the specified pattern.
 
+``--rate-limit``
+
+Limit rate when cp file from local to qingstor, or qingstor to local,
+unit: K/M/G, eg: 100K.
+
 ========
 Examples
 ========
@@ -91,3 +97,22 @@ Output::
 
     File 'test/test1.txt' written
     File 'test/test2.txt' written
+
+The following ``cp`` command copies a single file to bucket ``mybucket``,
+and limit the transmission speed of 100K per second::
+
+    $ qsctl cp test.txt qs://mybucket --rate-limit 100K
+
+Output::
+
+    Key <test.txt> created
+    File 'test.txt' deleted
+
+The following ``cp`` command copies test1.txt in bucket ``mybucket`` to local
+directory, and limit the transmission speed of 100K per second::
+
+    $ qsctl cp qs://mybucket/test1.txt test/ --rate-limit 100K
+
+Output::
+
+    File 'test/test1.txt' written
diff --git a/qingstor/qsctl/helper/source/qsctl-mv.rst b/qingstor/qsctl/helper/source/qsctl-mv.rst
index b92e6893..9a3641b1 100644
--- a/qingstor/qsctl/helper/source/qsctl-mv.rst
+++ b/qingstor/qsctl/helper/source/qsctl-mv.rst
@@ -17,6 +17,7 @@ Synopsis
     [-r, --recursive]
     [--exclude]
     [--include]
+    [--rate-limit]
 
 ===========
 Description
@@ -51,6 +52,11 @@ Exclude all keys or files that match the specified pattern.
 
 Do not exclude keys or files that match the specified pattern.
 
+``--rate-limit``
+
+Limit rate when mv file from local to qingstor, or qingstor to local,
+unit: K/M/G, eg: 100K.
+
 ========
 Examples
 ========
@@ -99,3 +105,22 @@ Output::
     File 'test/test2.txt' written
     Key <test/test1.txt> deleted
     Key <test/test2.txt> deleted
+
+The following ``mv`` command moves a single file to bucket ``mybucket``,
+and limit the transmission speed of 100K per second::
+
+    $ qsctl mv test.txt qs://mybucket
+
+Output::
+
+    Key <test.txt> created
+    File 'test.txt' deleted
+
+The following ``mv`` command moves test1.txt in bucket ``mybucket`` to local
+directory, and limit the transmission speed of 100K per second::
+
+    $ qsctl mv qs://mybucket/test1.txt test/ --rate-limit 100K
+
+Output::
+
+    File 'test/test1.txt' written
diff --git a/qingstor/qsctl/helper/source/qsctl-sync.rst b/qingstor/qsctl/helper/source/qsctl-sync.rst
index 6f963c4d..7aac607f 100644
--- a/qingstor/qsctl/helper/source/qsctl-sync.rst
+++ b/qingstor/qsctl/helper/source/qsctl-sync.rst
@@ -17,6 +17,7 @@ Synopsis
     [--delete]
     [--exclude]
     [--include]
+    [--rate-limit]
 
 ===========
 Description
@@ -47,6 +48,11 @@ Exclude all keys or files that match the specified pattern.
 
 Do not exclude keys or files that match the specified pattern.
 
+``--rate-limit``
+
+Limit rate when sync file from local to qingstor, or qingstor to local,
+unit: K/M/G, eg: 100K.
+
 ========
 Examples
 ========
@@ -82,3 +88,24 @@ Output::
     File 'test/test1.txt' written
     File 'test/test2.txt' written
     File 'test/test3.txt' deleted
+
+The following ``sync`` command will sync local directory to QS-Directory,
+and limit the transmission speed of 100K per second::
+
+    $ qsctl sync . qs://mybucket --rate-limit 100K
+
+Output::
+
+    Key <test1.txt> created
+    Key <test2.txt> created
+    Key <test3.txt> created
+
+The following ``sync`` command sync QS-Directory to local directory,
+and limit the transmission speed of 100K per second::
+
+    $ qsctl sync qs://mybucket/test test/ --rate-limit 100K
+
+Output::
+
+    File 'test/test1.txt' written
+    File 'test/test2.txt' written