diff --git a/autoload/SpaceVim/api/file.vim b/autoload/SpaceVim/api/file.vim
index c17fc9d83..58f0fab33 100644
--- a/autoload/SpaceVim/api/file.vim
+++ b/autoload/SpaceVim/api/file.vim
@@ -249,8 +249,9 @@ endfunction
 
 let s:file['unify_path'] = function('s:unify_path')
 
-function! s:path_to_fname(path) abort
-  return substitute(s:unify_path(a:path), '[\\/:;.]', '_', 'g')
+function! s:path_to_fname(path, ...) abort
+  let sep = get(a:000, 0, '_')
+  return substitute(s:unify_path(a:path), '[\\/:;.]', sep, 'g')
 endfunction
 
 let s:file['path_to_fname'] = function('s:path_to_fname')
diff --git a/autoload/SpaceVim/layers/edit.vim b/autoload/SpaceVim/layers/edit.vim
index e6be418e4..d549d6907 100644
--- a/autoload/SpaceVim/layers/edit.vim
+++ b/autoload/SpaceVim/layers/edit.vim
@@ -41,6 +41,13 @@
 "     name = 'edit'
 "     autosave_all_buffers = true
 " <
+" 4. `autosave_location`: set the directory where to save changed files. By
+" default it is empty string, that means saving to the original file. If this
+" option is not an empty string. files will me saved to that directory
+" automatically. and the format is:
+" >
+"   autosave_location/path+=to+=filename.ext.backup
+" <
 
 scriptencoding utf-8
 if exists('s:autosave_timeout')
@@ -57,6 +64,7 @@ let s:BUFFER = SpaceVim#api#import('vim#buffer')
 let s:autosave_timeout = 0
 let s:autosave_events = []
 let s:autosave_all_buffers = 0
+let s:autosave_location = ''
 
 function! SpaceVim#layers#edit#health() abort
   call SpaceVim#layers#edit#plugins()
@@ -101,6 +109,7 @@ function! SpaceVim#layers#edit#set_variable(var) abort
   let s:autosave_timeout = get(a:var, 'autosave_timeout', s:autosave_timeout)
   let s:autosave_events = get(a:var, 'autosave_events', s:autosave_events)
   let s:autosave_all_buffers = get(a:var, 'autosave_all_buffers', s:autosave_all_buffers)
+  let s:autosave_location = get(a:var, 'autosave_location', s:autosave_location)
 endfunction
 
 function! SpaceVim#layers#edit#get_options() abort
@@ -111,6 +120,7 @@ function! SpaceVim#layers#edit#config() abort
   let autosave_opt = {
         \ 'timeoutlen' : s:autosave_timeout,
         \ 'save_all_buffers' : s:autosave_all_buffers,
+        \ 'backupdir' : s:autosave_location,
         \ 'event' : s:autosave_events,
         \ }
   call SpaceVim#plugins#autosave#config(autosave_opt)
diff --git a/autoload/SpaceVim/plugins/autosave.vim b/autoload/SpaceVim/plugins/autosave.vim
index e0deebbcd..41dc326ff 100644
--- a/autoload/SpaceVim/plugins/autosave.vim
+++ b/autoload/SpaceVim/plugins/autosave.vim
@@ -28,6 +28,7 @@ let s:default_opt = {
       \ }
 
 let s:LOGGER =SpaceVim#logger#derive('autosave')
+let s:FILE = SpaceVim#api#import('file')
 
 let s:autosave_timer  = -1
 
@@ -47,6 +48,16 @@ function! SpaceVim#plugins#autosave#config(opt) abort
   endfor
 endfunction
 
+function! s:location_path(bufname) abort
+  if empty(s:default_opt.backupdir)
+    return a:bufname
+  else
+    return s:default_opt.backupdir . '/'
+          \ . s:FILE.path_to_fname(a:bufname)
+          \ . '.backup'
+  endif
+endfunction
+
 
 function! s:save_buffer(bufnr) abort
   if getbufvar(a:bufnr, '&modified') &&
@@ -54,9 +65,11 @@ function! s:save_buffer(bufnr) abort
         \ filewritable(bufname(a:bufnr)) &&
         \ !empty(bufname(a:bufnr))
     let lines = getbufline(a:bufnr, 1, "$")
-    call writefile(lines, bufname(a:bufnr))
-    call setbufvar(a:bufnr, "&modified", 0)
-    exe 'silent checktime ' . a:bufnr
+    call writefile(lines, s:location_path(bufname(a:bufnr), '+='))
+    if empty(s:default_opt.backupdir)
+      call setbufvar(a:bufnr, "&modified", 0)
+      exe 'silent checktime ' . a:bufnr
+    endif
   endif
 endfunction
 
diff --git a/doc/SpaceVim.txt b/doc/SpaceVim.txt
index a9cf27b84..9b9c2f5a9 100644
--- a/doc/SpaceVim.txt
+++ b/doc/SpaceVim.txt
@@ -1789,6 +1789,13 @@ If you want to save all buffers automatically. Set this option to `true`.
     name = 'edit'
     autosave_all_buffers = true
 <
+  4. `autosave_location`: set the directory where to save changed files. By
+default it is empty string, that means saving to the original file. If this
+option is not an empty string. files will me saved to that directory
+automatically. and the format is:
+>
+  autosave_location/path+=to+=filename.ext.backup
+<
 
 ==============================================================================
 EXPRFOLD                                            *SpaceVim-layers-exprfold*