有些时候我们选择的Linux云服务器默认是Debian官方国外的源，使用国外的源在国内用的时候安装软件速度比较慢。于是，我们一般是会切换成国内的镜像源的。在这里，国内的源也有很多可以选择，比如中科大、华为云、腾讯云、163等。

我们可以在Debian官方全球源列表中看到中国的源渠道，这里我整理8个常用的源。

当然，如果我们需要更换源的时候直接在对应的：

/etc/apt/sources.list

文件中复制更新后再执行升级。

apt update -y&& apt upgrade -y

阿里云源镜像

deb http://mirrors.aliyun.com/debian/ buster main non-free contrib

deb http://mirrors.aliyun.com/debian-security buster/updates main

deb http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib

deb http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib

deb-src http://mirrors.aliyun.com/debian-security buster/updates main

deb-src http://mirrors.aliyun.com/debian/ buster main non-free contrib

deb-src http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib

deb-src http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib

163源镜像

deb http://mirrors.163.com/debian/ buster main non-free contrib

deb http://mirrors.163.com/debian/ buster-updates main non-free contrib

deb http://mirrors.163.com/debian/ buster-backports main non-free contrib

deb http://mirrors.163.com/debian-security/ buster/updates main non-free contrib

deb-src http://mirrors.163.com/debian/ buster main non-free contrib

deb-src http://mirrors.163.com/debian/ buster-updates main non-free contrib

deb-src http://mirrors.163.com/debian/ buster-backports main non-free contrib

deb-src http://mirrors.163.com/debian-security/ buster/updates main non-free contrib

腾讯云源镜像

deb http://mirrors.cloud.tencent.com/debian/ buster main non-free contrib

deb http://mirrors.cloud.tencent.com/debian-security buster/updates main

deb http://mirrors.cloud.tencent.com/debian/ buster-updates main non-free contrib

deb http://mirrors.cloud.tencent.com/debian/ buster-backports main non-free contrib

deb-src http://mirrors.cloud.tencent.com/debian-security buster/updates main

deb-src http://mirrors.cloud.tencent.com/debian/ buster main non-free contrib

deb-src http://mirrors.cloud.tencent.com/debian/ buster-updates main non-free contrib

deb-src http://mirrors.cloud.tencent.com/debian/ buster-backports main non-free contrib

华为云源镜像

deb https://mirrors.huaweicloud.com/debian/ buster main contrib non-free

deb https://mirrors.huaweicloud.com/debian/ buster-updates main contrib non-free

deb https://mirrors.huaweicloud.com/debian/ buster-backports main contrib non-free

deb https://mirrors.huaweicloud.com/debian-security/ buster/updates main contrib non-free

deb-src https://mirrors.huaweicloud.com/debian/ buster main contrib non-free

deb-src https://mirrors.huaweicloud.com/debian/ buster-updates main contrib non-free

deb-src https://mirrors.huaweicloud.com/debian/ buster-backports main contrib non-free

中科大源镜像

deb https://mirrors.ustc.edu.cn/debian/ buster main contrib non-free

deb https://mirrors.ustc.edu.cn/debian/ buster-updates main contrib non-free

deb https://mirrors.ustc.edu.cn/debian/ buster-backports main contrib non-free

deb https://mirrors.ustc.edu.cn/debian-security/ buster/updates main contrib non-free

deb-src https://mirrors.ustc.edu.cn/debian/ buster main contrib non-free

deb-src https://mirrors.ustc.edu.cn/debian/ buster-updates main contrib non-free

deb-src https://mirrors.ustc.edu.cn/debian/ buster-backports main contrib non-free

deb-src https://mirrors.ustc.edu.cn/debian-security/ buster/updates main contrib non-free

清华大学源镜像

deb https://mirrors.tuna.tsinghua.edu.cn/debian/ buster main contrib non-free

deb https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-updates main contrib non-free

deb https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-backports main contrib non-free

deb https://mirrors.tuna.tsinghua.edu.cn/debian-security/ buster/updates main contrib non-free

deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ buster main contrib non-free

deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-updates main contrib non-free

deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-backports main contrib non-free

deb-src https://mirrors.tuna.tsinghua.edu.cn/debian-security/ buster/updates main contrib non-free

兰州大学源镜像

deb http://mirror.lzu.edu.cn/debian stable main contrib non-free

deb http://mirror.lzu.edu.cn/debian stable-updates main contrib non-free

deb http://mirror.lzu.edu.cn/debian/ buster-backports main contrib non-free

deb http://mirror.lzu.edu.cn/debian-security/ buster/updates main contrib non-free

deb-src http://mirror.lzu.edu.cn/debian stable main contrib non-free

deb-src http://mirror.lzu.edu.cn/debian stable-updates main contrib non-free

deb-src http://mirror.lzu.edu.cn/debian/ buster-backports main contrib non-free

deb-src http://mirror.lzu.edu.cn/debian-security/ buster/updates main contrib non-free

上海交大源镜像

deb https://mirror.sjtu.edu.cn/debian/ buster main contrib non-free

deb https://mirror.sjtu.edu.cn/debian/ buster-updates main contrib non-free

deb https://mirror.sjtu.edu.cn/debian/ buster-backports main contrib non-free

deb https://mirror.sjtu.edu.cn/debian-security/ buster/updates main contrib non-free

deb-src https://mirror.sjtu.edu.cn/debian/ buster-updates main contrib non-free

deb-src https://mirror.sjtu.edu.cn/debian/ buster-backports main contrib non-free

deb-src https://mirror.sjtu.edu.cn/debian/ buster main contrib non-free

deb-src https://mirror.sjtu.edu.cn/debian-security/ buster/updates main contrib non-free

这里的几个国内源镜像，可以根据需要选择使用。如果我们的服务器已经是国内的源就没有必要更换。