I masturbate nearly 4times each day n i found that there were som tears on my penis head which were paining i don't know what to do the tears at 2 part?

Stop Masturbating: When a penis is injured then the penis needs some time to heal and the skin needs time to recover. This is not rocket science here. Your masturbation frequency or technique has led to injury. Stop masturbating till this skin is fully healed. Then once it is healed please use some form of lubrication when you masturbate so this does not happen again.

Lubricate & Avoid: Avoid rubbing torn spots. Use antibiotic cream on the tears. If signs of infection see med practitioner. 4x/day requires care and gentleness to prevent self-injury. Use viscous lubricant like vaseline, but take care because it stains underwear and sheets. You may need to lighten up the frequency. Consider cool showers & walks in moderation. Dont' get down on yourself about it.

Dear Owl: It is clear that your masturbation is excessive as it is causing you physical harm. I really encourage you to give it a rest and allow your tissues to heal. I don't know if you are sexually active with others. But if there is any chance that you could have a sexually transmitted disease then please be medically evaluated.