Chronic Atrophic gastritis gastritis(CAG) is a common disease of the digestive system. If CAG is accompanied by intestinal metaplasia and dysplasia, the risk of developing gastric cancer is increased. At present, there is no specific therapy for this disease. Director Yu Lifang has been engaged in the diagnosis and treatment of CAG for many years, and she has rich clinical experience. She insists on the people-oriented diagnosis and treatment of this disease, combines the reality of society, environment and psychology, organically combines traditional Chinese and western medicine, and uses multiple methods, it is not only to relieve the symptoms, but also to adjust and restore the whole balance of the patients. This kind of comprehensive treatment has shown important value in clinic and is worth studying and using for reference. This article sums up director Yu Li-fang’s ideas and experience in the diagnosis and treatment of this disease for reference. 1 case is attached for examination.