1.打开终端，使用root用户
2.把系统原本的sources.list源文件，改名为sources.list.bak
mv /etc/apt/sources.list /etc/apt/sources.list.bak
3.把下载新的sources.list源文件放到桌面
以下为替换的源文件内容：
## Generated by deepin-installer deb [by-hash=force] https://professional-packages.chinauos.com/desktop-professional eagle main contrib non-free #deb-src [by-hash=force] https://professional-packages.chinauos.com/desktop-professional eagle main contrib non-free
4.把用户桌面上的源文件，移动到/etc/apt/目录下
mv /home/uos/Desktop/sources.list /etc/apt/
uos——是用户名，这个是需要修改的，每个用户名都不同
注意事项：
apt源文件在/etc/apt/目录中，有区分apt源与应用商店的源
:~$ cat /etc/apt/sources.list ## Generated by deepin-installer deb [by-hash=force] https://professional-packages.chinauos.com/desktop-professional eagle main contrib non-free #deb-src [by-hash=force] https://professional-packages.chinauos.com/desktop-professional eagle main contrib non-free :~$ cat /etc/apt/sources.list.d/appstore.list deb https://professional-store-packages.chinauos.com/appstore eagle appstore :~$
原文：https://www.cnblogs.com/drgcaosheng/p/14692150.html