The undergraduate specialty of stomatology is generally divided into five years (four years of theoretical study and one year of internship), three years for master students and three years for doctoral students. Universities are generally three-year programs. This master studied for 7 years, this master studied for 8 years, and this master studied for 5 years. Students majoring in stomatology mainly study the basic theory and knowledge of stomatology, cultivate the ability of diagnosis, treatment and prevention of oral and maxillofacial diseases, and have the basic ability of diagnosis, repair, prevention and health care of common oral diseases and frequently-occurring diseases. After graduation, I mainly engaged in oral medicine diagnosis and treatment or preventive health care, medical education and medical research.