Microwave joining is a rapid developmental new technique in recent years. This paper introduces a new microwave joining equipment which was made by our lab,succeeds in alumina ceramic-hydroxylapatite bio-ceramic join in the equipment, and analyzes the join situation of join boundary by using scanning electron microscope (SEM). this paper analyzes the mechanism of microwave joining also. Microwave paper is a rapid developmental new technique in recent years. This paper introduces a new microwave joining equipment which was made by our lab, succeeds in alumina ceramic-hydroxylapatite bio-ceramic join in the equipment, and analyzes the join situation of join boundary by using scanning electron microscope (SEM). this paper analyzes the mechanism of microwave joining also.