快速备份
备份：File → Manage IDE Settings → Export Settings
恢复：File → Manage IDE Settings → Import Settings
自定义备份
在 安装目录/bin 找到 idea.properties
#---------------------------------------------------------------------
# 配置目录
#---------------------------------------------------------------------
idea.config.path=D:/Program Files/JetBrains/IntelliJ IDEA 2021.2.3/.IntelliJIdea2021.2/config
#---------------------------------------------------------------------
# 缓存目录
#---------------------------------------------------------------------
idea.system.path=D:/Program Files/JetBrains/IntelliJ IDEA 2021.2.3/.IntelliJIdea2021.2/system
#---------------------------------------------------------------------
# 用户插件目录
#---------------------------------------------------------------------
idea.plugins.path=${idea.config.path}/plugins
#---------------------------------------------------------------------
# 日志目录
#---------------------------------------------------------------------
idea.log.path=${idea.system.path}/log将 plugins 和 .IntelliJIdea2021.2 打包带走
Reference