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改成这样试试?

@echo off
:begin
set DstPro=qq.exe
set flag=""
for /f %%a in ('tasklist^|findstr /i "%DstPro%"') do set flag=%%a
if %flag% neq "" (
  start "" cmd.exe&exit
)
ping 127.1 -n 10 >nul
goto :begin
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