diff --git a/README.md b/README.md
index a6ba48b..1f0c4ce 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,8 @@ It will output something like:
 
 ####TODO
 
+**It's done now, ctag will be install on different platforms**
+
 In mac, should replace the [`Exuberant CTags`](http://www.scholarslab.org/research-and-development/code-spelunking-with-ctags-and-vim/)
 
     brew install ctags
diff --git a/setup.sh b/setup.sh
index bf9d292..02a77e7 100644
--- a/setup.sh
+++ b/setup.sh
@@ -24,3 +24,11 @@ exe_cmd "ln -sf $root_dir/files/_vimrc $vim_rc"
 
 exe_cmd 'git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim'
 exe_cmd 'vim +PluginInstall +qall'
+
+if type "brew" > /dev/null 2>&1; then
+    exe_cmd "brew install ctags"
+elif type "yum" > /dev/null 2>&1; then
+    exe_cmd "sudo yum install -y ctags"
+elif type "apt-get" > /dev/null 2>&1; then
+    exe_cmd "sudo apt-get install exuberant-ctags"
+fi