The preventive medicine specialty of Sun Yat-sen University includes preventive medicine, health management, nutrition, maternal and child health, medical psychology and other professional directions, among which nutrition and maternal and child health are the general direction of later triage, and medical psychology is the minor direction. This major implements the whole tutorial system, which requires mastering not only the basic theories, basic knowledge and basic skills of basic medicine and clinical medicine, but also the basic theories, basic knowledge and basic skills of public health and preventive medicine, with strong ability to analyze and solve problems and preliminary scientific research, agile logical thinking ability, independent thinking ability, organization and coordination ability and social practice ability, mastering a foreign language, and being able to read professional foreign language books and periodicals.