Welcome to PT!

How old is the dog?
Has he always done this?


It sounds as if he thinks the crate is a bad place. Do you ever put him in the crate for punishment or punish him while he is in the crate?
You need him to understand that his crate is a happy safe place to be. Never punish him in or near his crate nor put him in it for punishment.
Give him some toys to keep him busy while he is in there. Kong toys are great, you can fill them with all sort of treats & they have to work at them to get the yummies inside. Keep a few of his favorite toys set aside & use them ONLY when he is in the crate.
To help get him used to his crate you can feed him his meals in there. If he's really scared f his crate start off slow. Start by feeding him next to his crate, a few days later move his bowl to the door of his crate, a few days later move the bowl just inside his crate etc...
Does he seem lonely in the crate? If so is there a way to move his crate into your bedroom at night so he sleeps next to you?

Hope this helps a little!