CentOS安裝文件有兩類（32位和64位），每類下載對應有不同的版本，這些版本適合不同需求的用戶。
CentOS 7官方下載地址：https://www.centos.org/download/
在CentOS官方網站上，CentOS 7提供了三種ISO鏡像文件的下載：DVD ISO、Everything ISO、Minimal ISO。
以下針對各個版本的ISO鏡像文件，進行一一說明：
CentOS-7.0-x86_64-DVD-1503-01.iso 標準安裝版，一般下載這個就可以了（推薦）
CentOS-7.0-x86_64-NetInstall-1503-01.iso 網絡安裝鏡像（從網絡安裝或者救援系統）
CentOS-7.0-x86_64-Everything-1503-01.iso 對完整版安裝盤的軟件進行補充，集成所有軟件。（包含centos7的一套完整的軟件包，可以用來安裝系統或者填充本地鏡像）
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 光盤上運行的系統，類擬於winpe
CentOS-7.0-x86_64-minimal-1503-01.iso 精簡版，自帶的軟件最少
1、點擊“DVD ISO”按鈕，即可下載CentOS 7 DVD ISO 鏡像文件。
2、點擊“Everything ISO”按鈕，即可進入CentOS 7 Everything ISO鏡像文件的下載頁面，該頁面提供了Actual Country（“實際國家”，可以解釋爲您此刻所在的國家，即“本國”）和 Nearby Countries（“附近國家”）的一系列 ISO 鏡像文件下載鏈接。
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、點擊“Minimal ISO”按鈕，即可進入CentOS 7 Minimal ISO鏡像文件的下載頁面，該頁面同樣提供了Actual Country 和 Nearby Countries 的一系列 ISO 鏡像文件下載鏈接。
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
其實，CentOS 7 還可以通過其它方式下載，官方網站還有一項“torrent”的下載方式。
點擊“via Torrent”，進入下載頁面：
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/