CentOS 7官方下载地址：https://www.centos.org/download/
在CentOS官方网站上，CentOS 7提供了三种ISO镜像文件的下载：DVD ISO、Everything ISO、Minimal ISO。
以下针对各个版本的ISO镜像文件，进行一一说明：
CentOS-7.0-x86_64-DVD-1503-01.iso 标准安装版，一般下载这个就可以了（推荐）
CentOS-7.0-x86_64-NetInstall-1503-01.iso 网络安装镜像（从网络安装或者救援系统）
CentOS-7.0-x86_64-Everything-1503-01.iso 对完整版安装盘的软件进行补充，集成所有软件。（包含centos7的一套完整的软件包，可以用来安装系统或者填充本地镜像）
CentOS-7.0-x86_64-GnomeLive-1503-01.iso GNOME桌面版
CentOS-7.0-x86_64-KdeLive-1503-01.iso KDE桌面版
CentOS-7.0-x86_64-livecd-1503-01.iso 光盘上运行的系统，类拟于winpe
CentOS-7.0-x86_64-minimal-1503-01.iso 精简版，自带的软件最少
1、点击“DVD ISO”按钮，即可下载CentOS 7 DVD ISO 镜像文件。
2、点击“Everything ISO”按钮，即可进入CentOS 7 Everything ISO镜像文件的下载页面，该页面提供了Actual Country（“实际国家”，可以解释为您此刻所在的国家，即“本国”）和 Nearby Countries（“附近国家”）的一系列 ISO 镜像文件下载链接。
Actual Country -
http://mirrors.opencas.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirrors.skyshe.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirrors.zju.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirrors.hust.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirrors.pubyun.com/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.bit.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirrors.yun-idc.com/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirrors.nwsuaf.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://centos.ustc.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.sjtu.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirrors.hustunique.com/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirrors.sina.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirrors.163.com/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirrors.aliyun.com/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.neu.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirrors.btte.net/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirrors.cqu.edu.cn/CentOS/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
Nearby Countries -
http://ftp.stu.edu.tw/Linux/CentOS/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror01.idc.hinet.net/CentOS/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.yzu.edu.tw/Linux/CentOS/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://centos.cs.nctu.edu.tw/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.ksu.edu.tw/pub/CentOS/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.isu.edu.tw/pub/Linux/CentOS/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.twaren.net/Linux/CentOS/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.premi.st/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://data.nicehosting.co.kr/os/CentOS/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://centos.tt.co.kr/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.daumkakao.com/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.kaist.ac.kr/CentOS/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.neowiz.com/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.oasis.onnetcorp.com/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://centos.mirror.cdnetworks.com/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.nus.edu.sg/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.vastspace.net/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://centos.usonyx.net/main/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.vodien.com/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://www.ftp.ne.jp/Linux/packages/CentOS/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.yz.yamagata-u.ac.jp/pub/linux/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.iij.ad.jp/pub/linux/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.fairway.ne.jp/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.jaist.ac.jp/pub/Linux/CentOS/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.tsukuba.wide.ad.jp/Linux/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.nara.wide.ad.jp/pub/Linux/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://ftp.riken.jp/Linux/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.digitalhusky.com/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.logol.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.vilkam.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.tversu.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.satellite-service.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://centos-mirror.rbc.ru/pub/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.astpage.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.corbina.net/pub/Linux/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.yandex.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
http://mirror.h1host.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1503-01.iso
3、点击“Minimal ISO”按钮，即可进入CentOS 7 Minimal ISO镜像文件的下载页面，该页面同样提供了Actual Country 和 Nearby Countries 的一系列 ISO 镜像文件下载链接。
Actual Country -
http://mirrors.opencas.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirrors.skyshe.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirrors.zju.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirrors.hust.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirrors.pubyun.com/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.bit.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirrors.yun-idc.com/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirrors.nwsuaf.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://centos.ustc.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.sjtu.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirrors.hustunique.com/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirrors.sina.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirrors.163.com/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirrors.aliyun.com/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.neu.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirrors.btte.net/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirrors.cqu.edu.cn/CentOS/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
Nearby Countries -
http://ftp.stu.edu.tw/Linux/CentOS/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror01.idc.hinet.net/CentOS/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.yzu.edu.tw/Linux/CentOS/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://centos.cs.nctu.edu.tw/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.ksu.edu.tw/pub/CentOS/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.isu.edu.tw/pub/Linux/CentOS/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.twaren.net/Linux/CentOS/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.premi.st/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://data.nicehosting.co.kr/os/CentOS/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://centos.tt.co.kr/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.daumkakao.com/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.kaist.ac.kr/CentOS/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.neowiz.com/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.oasis.onnetcorp.com/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://centos.mirror.cdnetworks.com/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.nus.edu.sg/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.vastspace.net/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://centos.usonyx.net/main/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.vodien.com/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://www.ftp.ne.jp/Linux/packages/CentOS/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.yz.yamagata-u.ac.jp/pub/linux/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.iij.ad.jp/pub/linux/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.fairway.ne.jp/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.jaist.ac.jp/pub/Linux/CentOS/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.tsukuba.wide.ad.jp/Linux/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.nara.wide.ad.jp/pub/Linux/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://ftp.riken.jp/Linux/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.digitalhusky.com/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.logol.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.vilkam.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.tversu.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.satellite-service.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://centos-mirror.rbc.ru/pub/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.astpage.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.corbina.net/pub/Linux/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.yandex.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
http://mirror.h1host.ru/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1503-01.iso
其实，CentOS 7 还可以通过其它方式下载，官方网站还有一项“torrent”的下载方式。
点击“via Torrent”，进入下载页面：
Actual Country -
http://ftp.sjtu.edu.cn/centos/7/isos/x86_64/
http://mirror.neu.edu.cn/centos/7/isos/x86_64/
http://mirrors.zju.edu.cn/centos/7/isos/x86_64/
http://mirror.bit.edu.cn/centos/7/isos/x86_64/
http://mirrors.163.com/centos/7/isos/x86_64/
http://mirrors.aliyun.com/centos/7/isos/x86_64/
http://mirrors.yun-idc.com/centos/7/isos/x86_64/
http://mirrors.opencas.cn/centos/7/isos/x86_64/
http://mirrors.btte.net/centos/7/isos/x86_64/
http://mirrors.nwsuaf.edu.cn/centos/7/isos/x86_64/
http://mirrors.cqu.edu.cn/CentOS/7/isos/x86_64/
http://mirrors.hust.edu.cn/centos/7/isos/x86_64/
http://centos.ustc.edu.cn/centos/7/isos/x86_64/
http://mirrors.pubyun.com/centos/7/isos/x86_64/
http://mirrors.skyshe.cn/centos/7/isos/x86_64/
http://mirrors.sina.cn/centos/7/isos/x86_64/
Nearby Countries -
http://ftp.stu.edu.tw/Linux/CentOS/7/isos/x86_64/
http://ftp.yzu.edu.tw/Linux/CentOS/7/isos/x86_64/
http://centos.cs.nctu.edu.tw/7/isos/x86_64/
http://ftp.twaren.net/Linux/CentOS/7/isos/x86_64/
http://ftp.ksu.edu.tw/pub/CentOS/7/isos/x86_64/
http://ftp.isu.edu.tw/pub/Linux/CentOS/7/isos/x86_64/
http://mirror01.idc.hinet.net/CentOS/7/isos/x86_64/
http://ftp.kaist.ac.kr/CentOS/7/isos/x86_64/
http://centos.mirror.cdnetworks.com/7/isos/x86_64/
http://mirror.oasis.onnetcorp.com/centos/7/isos/x86_64/
http://mirror.premi.st/centos/7/isos/x86_64/
http://ftp.daumkakao.com/centos/7/isos/x86_64/
http://data.nicehosting.co.kr/os/CentOS/7/isos/x86_64/
http://centos.tt.co.kr/7/isos/x86_64/
http://ftp.neowiz.com/centos/7/isos/x86_64/
http://mirror.nus.edu.sg/centos/7/isos/x86_64/
http://centos.usonyx.net/main/7/isos/x86_64/
http://mirror.vodien.com/centos/7/isos/x86_64/
http://mirror.vastspace.net/centos/7/isos/x86_64/
http://ftp.jaist.ac.jp/pub/Linux/CentOS/7/isos/x86_64/
http://www.ftp.ne.jp/Linux/packages/CentOS/7/isos/x86_64/
http://ftp.iij.ad.jp/pub/linux/centos/7/isos/x86_64/
http://ftp.yz.yamagata-u.ac.jp/pub/linux/centos/7/isos/x86_64/
http://ftp.riken.jp/Linux/centos/7/isos/x86_64/
http://ftp.nara.wide.ad.jp/pub/Linux/centos/7/isos/x86_64/
http://mirror.fairway.ne.jp/centos/7/isos/x86_64/
http://ftp.tsukuba.wide.ad.jp/Linux/centos/7/isos/x86_64/
http://mirror.corbina.net/pub/Linux/centos/7/isos/x86_64/
http://mirror.tversu.ru/centos/7/isos/x86_64/
http://centos-mirror.rbc.ru/pub/centos/7/isos/x86_64/
http://mirror.digitalhusky.com/centos/7/isos/x86_64/
http://mirror.yandex.ru/centos/7/isos/x86_64/
http://mirror.astpage.ru/centos/7/isos/x86_64/
http://mirror.satellite-service.ru/centos/7/isos/x86_64/
http://mirror.vilkam.ru/centos/7/isos/x86_64/
http://mirror.h1host.ru/centos/7/isos/x86_64/
http://mirror.logol.ru/centos/7/isos/x86_64/
