diff --git a/autoload/SpaceVim.vim b/autoload/SpaceVim.vim
index 65763c65c..c8c423572 100644
--- a/autoload/SpaceVim.vim
+++ b/autoload/SpaceVim.vim
@@ -2,7 +2,7 @@
 " @section Introduction, intro
 " @stylized Maktaba
 " @library
-" @order intro version dicts functions exceptions layers colorscheme layer_lang_java layer_lang_php layer_lang_c
+" @order intro version dicts functions exceptions layers colorscheme layer_lang_java layer_lang_php layer_lang_c layer-lang-rust
 "   SpaceVim is a Modular configuration, a bundle of custom settings
 " and plugins, for Vim. It got inspired by spacemacs.
 
diff --git a/autoload/SpaceVim/layers/lang.vim b/autoload/SpaceVim/layers/lang.vim
index 4b19d7c64..8aee52f64 100644
--- a/autoload/SpaceVim/layers/lang.vim
+++ b/autoload/SpaceVim/layers/lang.vim
@@ -35,7 +35,6 @@ function! SpaceVim#layers#lang#plugins() abort
 endfunction
 
 function! SpaceVim#layers#lang#config() abort
-    let g:racer_cmd = $HOME.'/.cargo/bin/racer'
     let g:vim_markdown_conceal = 0
     let g:vim_markdown_folding_disabled = 1
 endfunction
diff --git a/autoload/SpaceVim/layers/lang/rust.vim b/autoload/SpaceVim/layers/lang/rust.vim
index b524b9f3b..3c3393d27 100644
--- a/autoload/SpaceVim/layers/lang/rust.vim
+++ b/autoload/SpaceVim/layers/lang/rust.vim
@@ -1,3 +1,26 @@
+""
+" @section layer-lang-rust, layer-lang-rust
+" requirement:
+"   1. racer : cargo install racer
+"   2. export RUST_SRC_PATH : 
+"       you can download src by : rustup component add rust-src, and add below
+"       into your bashrc.
+"
+" export RUST_SRC_PATH=~/.multirust/toolchains/[your-toolchain]/lib/rustlib/src/rust/src
+"
+" configuration:
+"   1. add `let g:racer_cmd = "/path/to/racer/bin"` in to custom config, if
+"   you has racer executable in you PATH. g:racer_cmd should be auto detect.
+"
+" mappings:
+" >
+"   mode        key         function
+"   normal      gd          rust-definition
+"   normal      gs          rust-definition-split
+"   normal      gx          rust-definition-vertical
+"   normal      <leader>gd  rust-doc
+" <
+
 function! SpaceVim#layers#lang#rust#plugins() abort
     let plugins = []
     call add(plugins, ['racer-rust/vim-racer',                   { 'on_ft' : 'rust'}])
@@ -6,5 +29,12 @@ function! SpaceVim#layers#lang#rust#plugins() abort
 endfunction
 
 function! SpaceVim#layers#lang#rust#config() abort
-    
+    let g:racer_experimental_completer = 1
+    let g:racer_cmd = $HOME.'/.cargo/bin/racer'
+    augroup spacevim_layer_lang_rust
+        au FileType rust nmap <buffer><silent> gd <Plug>(rust-def)
+        au FileType rust nmap <buffer><silent> gs <Plug>(rust-def-split)
+        au FileType rust nmap <buffer><silent> gx <Plug>(rust-def-vertical)
+        au FileType rust nmap <buffer><silent> <leader>gd <Plug>(rust-doc)
+    augroup END
 endfunction
diff --git a/doc/SpaceVim.txt b/doc/SpaceVim.txt
index 07c098c85..3a98dac6c 100644
--- a/doc/SpaceVim.txt
+++ b/doc/SpaceVim.txt
@@ -11,6 +11,7 @@ CONTENTS                                                   *SpaceVim-contents*
   6. Layer_lang_java................................|SpaceVim-layer_lang_java|
   7. Layer_lang_php..................................|SpaceVim-layer_lang_php|
   8. Layer_lang_c......................................|SpaceVim-layer_lang_c|
+  9. layer-lang-rust................................|SpaceVim-layer-lang-rust|
 
 ==============================================================================
 INTRODUCTION                                                  *SpaceVim-intro*
@@ -419,5 +420,29 @@ lang#c :
 
      requirement:      clang      libclang
 
+==============================================================================
+LAYER-LANG-RUST                                     *SpaceVim-layer-lang-rust*
+
+requirement:
+  1. racer : cargo install racer
+  2. export RUST_SRC_PATH :  you can download src by : rustup component add
+    rust-src, and add below into your bashrc.
+
+export RUST_SRC_PATH=~/.multirust/toolchains/[your-toolchain]/lib/rustlib/src/
+rust/src
+
+configuration:
+  1. add `let g:racer_cmd = "/path/to/racer/bin"` in to custom config, if you
+    has racer executable in you PATH. g:racer_cmd should be auto detect.
+
+mappings:
+>
+  mode        key         function
+  normal      gd          rust-definition
+  normal      gs          rust-definition-split
+  normal      gx          rust-definition-vertical
+  normal      <leader>gd  rust-doc
+<
+
 
 vim:tw=78:ts=8:ft=help:norl: