In my eyes, my father is a qualified father, but not a qualified husband. He often bullies his mother and looks down on her. What should I do?

Do you want to protect your mother or your father more? If you can't stop your father from bullying your mother, you can only grow up quickly and protect your mother. Maybe something happened in their last generation that we don't know much about, and then dad was biased against mom. In that case, you are the mediator between them and see if there is any way to understand their past. Or dad may encounter unpleasant things at work, so he can only take it out on his mother, so if you don't want her to get hurt again, you can choose.

Separate, and domestic violence is only 0 times and countless times. If a man always bullies women like this, it is rude and disrespectful to his other half. Only represents my personal opinion, I hope it will help you.