1.新建pip.ini
C:\Users\Administrator\pip\pip.ini
2.pip.ini内容
[global] index-url = https://pypi.tuna.tsinghua.edu.cn/simple
3.检查pip版本
pip show pip
4.检查版本后，可根据类似以下提示更新pip版本
You are using pip version 8.1.1, however version 20.0.2 is available.
You should consider upgrading via the ‘python -m pip install --upgrade pip‘ command.
原文：https://www.cnblogs.com/ATR-zaaz/p/12390110.html