首先找到文件的路径
C:\Windows\System32\drivers\etc


将hosts的文件复制一份到桌面，修改

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
#      102.54.94.97     rhino.acme.com          # source server
#       38.25.63.10     x.acme.com              # x client host

# localhost name resolution is handled within DNS itself.
	127.0.0.1       localhost
	127.0.0.1       www.yanglele.com

然后再粘贴回去
解决在 Win10没有修改 hosts文件权限问题
https://blog.csdn.net/qq_33703550/article/details/79230577
Windows 10修改hosts提示：您没有权限在此位置中保存文件
https://blog.csdn.net/aaa_a_1/article/details/80616363