1. 编辑 /etc/pacman.conf 文件

[archlinuxcn]
Include = /etc/pacman.d/archlinuxcn-mirrorlistb

2. 添加 archlinuxcn-mirrorlist文件

#
# Arch Linux CN community repository mirrorlist
# Generated on 2019-12-03
#

# Our main server (ipv4, ipv6, http, https)
#Server = <https://repo.archlinuxcn.org/$arch>

# 中国科学技术大学 (ipv4, ipv6, http, https)
Server = <https://mirrors.ustc.edu.cn/archlinuxcn/$arch>

# 上海科技大学 (上海) (ipv4, http, https)
#Server = <https://mirrors-wan.geekpie.club/archlinuxcn/$arch>

# 网易 (ipv4, http, https)
Server = <https://mirrors.163.com/archlinux-cn/$arch>

# 腾讯云 (ipv4, https)
Server = <https://mirrors.cloud.tencent.com/archlinuxcn/$arch>

# 重庆大学 (ipv4, http, https)
Server = <https://mirrors.cqu.edu.cn/archlinuxcn/$arch>

# SJTUG 软件源镜像服务 (ipv4, https)
#Server = <https://mirrors.sjtug.sjtu.edu.cn/archlinux-cn/$arch>

# 莞工 GNU/Linux 协会 开源软件镜像站 (ipv4, http, https)
#Server = <https://mirrors.dgut.edu.cn/archlinuxcn/$arch>

# 清华大学 (ipv4, ipv6, http, https)
Server = <https://mirrors.tuna.tsinghua.edu.cn/archlinuxcn/$arch>

# 浙江大学 (浙江杭州) (ipv4, ipv6, http, https)
Server = <https://mirrors.zju.edu.cn/archlinuxcn/$arch>

# xTom (Hong Kong server) (Hong Kong) (ipv4, ipv6, http, https)
#Server = <https://mirror.xtom.com.hk/archlinuxcn/$arch>

# xTom (US server) (US) (ipv4, ipv6, http, https)
#Server = <https://mirror.xtom.com/archlinuxcn/$arch>

# xTom (Netherlands server) (Netherlands) (ipv4, ipv6, http, https)
#Server = <https://mirror.xtom.nl/archlinuxcn/$arch>

# Open Computing Facility, UC Berkeley (Berkeley, CA, United States) (ipv4, ipv6, http, https)
#Server = <https://mirrors.ocf.berkeley.edu/archlinuxcn/$arch>