Atrophic gastritis is a relatively common gastric disease in the digestive system, and is a more complex and serious gastric disease compared to gastritis. Atrophic gastritis is a type of chronic gastritis characterized by atrophy of the gastric mucosa or intestinal epithelial metaplasia. For early mild atrophic gastritis, patients do not show very obvious symptoms, mainly upper abdominal discomfort, pain, abdominal distension, etc. Other symptoms have no obvious pattern. However, severe atrophic gastritis can show upper gastrointestinal bleeding, and for moderate and severe chronic atrophic gastritis, the chances of cancer are relatively high. In addition, atrophic gastritis, if left untreated and repeatedly prolonged, may become autoimmune gastritis, mostly manifested as anemia, complicated by Hashimoto’s thyroiditis, vitiligo, etc. Therefore, atrophic gastritis must be taken seriously to avoid developing into gastric cancer, and regular follow-up and gastroscopy should be performed regularly.