@echo offset /p before=请输入前面的字符set /p after=请输入后面的字符for /f "delims=" %%i in (1.txt) do ( if "%%i"=="" ( echo.>>2.txt ) else ( echo %before%%%i%after%>>2.txt ))del 1.txtren 2.txt 1.txt保存为123.bat 运行时保证123.bat和1.txt文件在同一目录下