|he's or his||
He's is the short form of 'he is' or 'he has'.
For example: " Don't be scared - he's very friendly."
His is a possessive pronoun, it is used to show something belonging to or connected with a man, boy or male animal that has just been mentioned.
For example: "Mark just phoned to say he'd left his coat behind. He's very worried. Do you know if this is his?"