What is the best discipline I can do to my 2years old baby?because he always cry if he never get his wants if I said no he still crying I don't want punch him every time I iterated if he cry if he don't get what he want?what is the best way to discipline him?

Looks like your son is now controlling you. I think the best thing to do is stand on your ground and your no means no. If he cries, don't give what he wants because the moment you give in his demands, he will think that the only way for him to get what he wants is to cry. He will do that always.