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.

She has a real temper problem. This is basically abuse. You have been very good about this whole thing. Find out whats the root cause of her temper. Sometimes there might be a hormonal imbalance. Go see a TCM doctor for some herbs to calm her down. In Chinese we believe that anger originates from the liver. So she must regulate the liver to calm it down using certain Acupuncture points, and herbal formulae that specifically and very effectively help the Liver to free up its energy, and flow like a river again, to great relief. Also try meditation.