This is very normal for a toddler of that age. What you need to do when he hits is tell him firmly that it's not okay. Or try to distract him. Don't worry, he'll calm down over this year.
Thank you for your kind reply.but the problem is when im sayng it calmly he again do that.if im sayng it louder then also he do thesame..im in trouble with that ..because he didint listen even when in sayn it lovely ..so is this will okay ??
Norico Kaushalya