安装完IntelliJ IDEA之后，默认会在windows的系统盘用户文件夹中创建配置等文件，而且默认保存在C盘，会造成C盘文件越来越多，影响系统运行速率，如何将配置迁移到非系统盘呢，很简单，以E盘为例：
找到安装路径找到安装路径下有个属性文件idea.properties（比如：D:\Program Files\JetBrains\IntelliJ IDEA 14.0.3\bin），打开此文件，前面三行就说了：
# Use ${idea.home} macro to specify location relative to IDE installation home.
# Use ${xxx} where xxx is any Java property (including defined in previous lines of this file) to refer to its value.
# Note for Windows users: please make sure you're using forward slashes (e.g. c:/idea/system).
修改这四行配置，如下：
#--------------------------------------------------------------------- # Uncomment this option if you want to customize path to IDE config folder. Make sure you're using forward slashes. #--------------------------------------------------------------------- idea.config.path=E:/IntelliJ IDEA/.IntelliJIdea14/config #--------------------------------------------------------------------- # Uncomment this option if you want to customize path to IDE system folder. Make sure you're using forward slashes. #--------------------------------------------------------------------- idea.system.path=E:/IntelliJ IDEA/.IntelliJIdea14/system #--------------------------------------------------------------------- # Uncomment this option if you want to customize path to user installed plugins folder. Make sure you're using forward slashes. #--------------------------------------------------------------------- idea.plugins.path=E:/IntelliJ IDEA/.IntelliJIdea14/plugins #--------------------------------------------------------------------- # Uncomment this option if you want to customize path to IDE logs folder. Make sure you're using forward slashes. #--------------------------------------------------------------------- idea.log.path=E:/IntelliJ IDEA/.IntelliJIdea14/system/log重启IntelliJ IDEA，即可！