diff --git a/autoload/SpaceVim/api/vim/command.vim b/autoload/SpaceVim/api/vim/command.vim
index 6abd426ac..846e20d49 100644
--- a/autoload/SpaceVim/api/vim/command.vim
+++ b/autoload/SpaceVim/api/vim/command.vim
@@ -9,7 +9,7 @@
 ""
 " @section vim#command, api-vim-command
 " @parentsection api
-" This api is for create complete function for custom vim command. This is
+" This api is for creating complete function for custom vim command. This is
 " example for create complete function for command TEST
 " >
 "   let s:CMD = SpaceVim#api#import('vim#command')
diff --git a/autoload/SpaceVim/autocmds.vim b/autoload/SpaceVim/autocmds.vim
index bfea9872b..dedc1a504 100644
--- a/autoload/SpaceVim/autocmds.vim
+++ b/autoload/SpaceVim/autocmds.vim
@@ -7,10 +7,7 @@
 "=============================================================================
 
 
-let s:SYS = SpaceVim#api#import('system')
-let s:JOB = SpaceVim#api#import('job')
 let s:VIM = SpaceVim#api#import('vim')
-let s:CMP = SpaceVim#api#import('vim#compatible')
 
 
 "autocmds
@@ -62,7 +59,6 @@ function! SpaceVim#autocmds#init() abort
       autocmd FocusGained * call s:reload_touchpad_status()
     endif
     autocmd BufWritePre * call SpaceVim#plugins#mkdir#CreateCurrent()
-    autocmd BufWritePost *.vim call s:generate_doc()
     autocmd ColorScheme * call SpaceVim#api#import('vim#highlight').hide_in_normal('EndOfBuffer')
     autocmd ColorScheme gruvbox,jellybeans,nord,srcery,NeoSolarized call s:fix_colorschem_in_SpaceVim()
     autocmd VimEnter * call SpaceVim#autocmds#VimEnter()
@@ -114,15 +110,6 @@ function! s:fixindentline() abort
     let s:done = 1
   endif
 endfunction
-function! s:generate_doc() abort
-  " neovim in windows executable function is broken
-  " https://github.com/neovim/neovim/issues/9391
-  if filereadable('./addon-info.json') && executable('vimdoc') && !s:SYS.isWindows
-    call s:JOB.start(['vimdoc', '.'])
-  elseif filereadable('./addon-info.json') && executable('python')
-    call s:JOB.start(['python', '-m', 'vimdoc', '.'])
-  endif
-endfunction
 
 function! s:fix_colorschem_in_SpaceVim() abort
   if &background ==# 'dark'
diff --git a/autoload/SpaceVim/layers/lang/vim.vim b/autoload/SpaceVim/layers/lang/vim.vim
index 70c3ef94b..83f6f42f3 100644
--- a/autoload/SpaceVim/layers/lang/vim.vim
+++ b/autoload/SpaceVim/layers/lang/vim.vim
@@ -6,9 +6,19 @@
 " License: GPLv3
 "=============================================================================
 
+if exists('s:auto_generate_doc')
+  finish
+endif
+
+
+let s:auto_generate_doc = 0
+
 " Load SpaceVim API
 
 let s:SID = SpaceVim#api#import('vim#sid')
+let s:JOB = SpaceVim#api#import('job')
+let s:SYS = SpaceVim#api#import('system')
+let s:FILE = SpaceVim#api#import('file')
 
 function! SpaceVim#layers#lang#vim#plugins() abort
   let plugins = [
@@ -40,6 +50,33 @@ function! SpaceVim#layers#lang#vim#config() abort
   call SpaceVim#mapping#gd#add('vim','lookup#lookup')
   call SpaceVim#mapping#space#regesit_lang_mappings('vim', function('s:language_specified_mappings'))
   call SpaceVim#plugins#highlight#reg_expr('vim', '\s*\<fu\%[nction]\>!\?\s*', '\s*\<endf\%[unction]\>\s*')
+  if s:auto_generate_doc
+    augroup spacevim_layer_lang_vim
+      autocmd!
+      autocmd BufWritePost *.vim call s:generate_doc()
+    augroup END
+  endif
+endfunction
+
+function! s:generate_doc() abort
+  " neovim in windows executable function is broken
+  " https://github.com/neovim/neovim/issues/9391
+  let fd = expand('%:p')
+  let addon_info = s:FILE.findfile('addon-info.json', fd)
+  if !empty(addon_info)
+    let dir = s:FILE.unify_path(addon_info, ':h')
+    if executable('vimdoc') && !s:SYS.isWindows
+      call s:JOB.start(['vimdoc', dir])
+    elseif executable('python')
+      call s:JOB.start(['python', '-m', 'vimdoc', dir])
+    endif
+  endif
+endfunction
+
+function! SpaceVim#layers#lang#vim#set_variable(var) abort
+
+  let s:auto_generate_doc = get(a:var, 'auto_generate_doc', s:auto_generate_doc)
+
 endfunction
 
 function! s:language_specified_mappings() abort
diff --git a/bundle/gtags.vim/doc/gtags.txt b/bundle/gtags.vim/doc/gtags.txt
index 10fe221a1..3a05917cf 100644
--- a/bundle/gtags.vim/doc/gtags.txt
+++ b/bundle/gtags.vim/doc/gtags.txt
@@ -10,7 +10,7 @@ CONTENTS                                                      *gtags-contents*
 ==============================================================================
 INTRODUCTION                                                     *gtags-intro*
 
-The gtags.vim plug-in script integrates the GNU GLOBAL source code tag system
+The gtags.vim plugin script integrates the GNU GLOBAL source code tag system
 with Vim. About the details, see http://www.gnu.org/software/global/.
 
 ==============================================================================
diff --git a/bundle/gtags.vim/plugin/gtags.vim b/bundle/gtags.vim/plugin/gtags.vim
index a4cd63e92..2f2a536e0 100644
--- a/bundle/gtags.vim/plugin/gtags.vim
+++ b/bundle/gtags.vim/plugin/gtags.vim
@@ -1,6 +1,6 @@
 ""
 " @section Introduction, intro
-" The gtags.vim plug-in script integrates the GNU GLOBAL source code tag
+" The gtags.vim plugin script integrates the GNU GLOBAL source code tag
 " system with Vim. About the details, see http://www.gnu.org/software/global/.
 
 scriptencoding utf-8
diff --git a/doc/SpaceVim.txt b/doc/SpaceVim.txt
index 7bcb8d0a1..43710ddfc 100644
--- a/doc/SpaceVim.txt
+++ b/doc/SpaceVim.txt
@@ -3833,7 +3833,7 @@ winexists({winid})
 ==============================================================================
 VIM#COMMAND                                         *SpaceVim-api-vim-command*
 
-This api is for create complete function for custom vim command. This is
+This api is for creating complete function for custom vim command. This is
 example for create complete function for command TEST
 >
   let s:CMD = SpaceVim#api#import('vim#command')
diff --git a/docs/cn/layers/lang/vim.md b/docs/cn/layers/lang/vim.md
index b0002eed7..0c7335911 100644
--- a/docs/cn/layers/lang/vim.md
+++ b/docs/cn/layers/lang/vim.md
@@ -10,6 +10,7 @@ lang: zh
 
 - [模块简介](#模块简介)
 - [启用模块](#启用模块)
+- [模块选项](#模块选项)
 - [快捷键](#快捷键)
 
 <!-- vim-markdown-toc -->
@@ -27,6 +28,10 @@ lang: zh
   name = "lang#vim"
 ```
 
+## 模块选项
+
+- `auto_generate_doc`: 保存 vim 脚本文件时，自动生成对应的帮助文档，这一功能依赖外部命令 [vimdoc](https://github.com/google/vimdoc)。
+
 ## 快捷键
 
 | 快捷键    | 功能描述                 |
diff --git a/docs/layers/lang/vim.md b/docs/layers/lang/vim.md
index 28f975872..0cfadcd49 100644
--- a/docs/layers/lang/vim.md
+++ b/docs/layers/lang/vim.md
@@ -9,6 +9,7 @@ description: "This layer is for writting Vimscript, including code completion, s
 
 - [Description](#description)
 - [Install](#install)
+- [Layer options](#layer-options)
 - [Key bindings](#key-bindings)
 
 <!-- vim-markdown-toc -->
@@ -26,6 +27,11 @@ To use this configuration layer, update custom configuration file with:
   name = "lang#vim"
 ```
 
+## Layer options
+
+- `auto_generate_doc`: generate help documentation automatically.
+  To generate help documentation, you need to install [vimdoc](https://github.com/google/vimdoc)
+
 ## Key bindings
 
 | Key Bindings | Descriptions                              |