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.

Try to talk to her when she is in good mood. Take her out for candle light dinner. Place camera at your home and record the scene u getting betten. Show her clip on the dinner date. Hold her hands and say you love her and request her to be nice. Keep supprising her with new gift frequently. If doesn't work talk to her family and request anyone to stay with you both. So that your wife will behave better infornt others for her dignity sake.