通过yum的方式安装：
yum groupinstall -y "Desktop" "Desktop Platform" "Desktop Platform Development" "Fonts" "General Purpose Desktop" "Graphical Administration Tools" "Graphics Creation Tools" "Input Methods" "X Window System" "Chinese Support [zh]" "Internet Browser"
安装完成后修改 /etc/inittab文件
id:5:initdefault:
CentOS 最小化安装后安装桌面,布布扣,bubuko.com
原文：http://www.cnblogs.com/hyli/p/3912393.html