Mac Spotlight index error

if you mac take too large size;

somethings like that that:

what a terrible things!!!

how to figure it 

step1:

open->System Preferences

step2:

open->Spotlight

step3:

choose->Privacy

you will see:

step4:

choose->add

step5:

find your Macintosh HD

step6:

choose->OK

step7:

choose->it(move it out)

step8:

delete it(by use "-")

step9:

quit/Spotlight

check result: