一 添加更新源

leafpad /etc/apt/sources.list

#中科大源
deb http://mirrors.ustc.edu.cn/kali kali-rolling main non-free contrib
deb-src http://mirrors.ustc.edu.cn/kali kali-rolling main non-free contrib

二 更新系统

apt-get update
apt-get upgrade
apt-get dist-upgrade
apt-get clean