@echo off set var=hell,world,ni,hao set ans=%var:,= google % //替换函数 将所有的逗号替换成google echo %ans% set var=abcdefghijklmn set ans=%var:~1,3% //截取函数 bcd echo %ans% set ans=%var:~1,5% //bcdef echo %ans% set ans=%var:~1,-5% //bcdefghi echo %ans% set ans=%var:~-5% //jklmn echo %ans%