My wife is very hot tempered and she like to hit me when she lose her temper. She will dig her fingernail into my skin and sometimes she will slam my head against the wall. I don't want to hit her back. I love her. I believe she loves me too. How can I calm her down. And stop her from abusing me like this.

i dare not say anything, too many variables that only you and her can know and understand. seek professional help. couples councelling can be quite helpful and unlock many issues. Respect to you for not hitting back. A weaker man may not have the same control. But relationship physical violence can't be good for children to see.