首先開啟kali新增更新源

vim  /etc/apt/sources.list 

新增更新源

#中科大
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

#阿里雲
#deb http://mirrors.aliyun.com/kali kali-rolling main non-free contrib
#deb-src http://mirrors.aliyun.com/kali kali-rolling main non-free contrib

#清華大學
#deb http://mirrors.tuna.tsinghua.edu.cn/kali kali-rolling main contrib non-free
#deb-src https://mirrors.tuna.tsinghua.edu.cn/kali kali-rolling main contrib non-free

#浙大
#deb http://mirrors.zju.edu.cn/kali kali-rolling main contrib non-free
#deb-src http://mirrors.zju.edu.cn/kali kali-rolling main contrib non-free

#東軟大學
#deb http://mirrors.neusoft.edu.cn/kali kali-rolling/main non-free contrib
 

檢視是否含有apt.conf檔案，目錄在/etc/apt/,我的只有apt.conf.d目錄，進入該目錄然後修改70debconf檔案，在裡面輸入了Acquire::AllowInsecureRepositories “true”; 

然後執行apt-config dump，檢視apt的對應配置有無生效 

Acquire::AllowInsecureRepositories的屬性值由最初的”0”變成了”true” 就是配置成功

然後敲入apt-get update && apt-get upgrade

參考網址：https://blog.csdn.net/include_heqile/article/details/79275944

https://wiki.debian.org/AptConf