Atrophic gastritis is usually not considered serious when it is not accompanied by complications, and is serious when it presents with intestinal epithelialized or heterogeneous hyperplasia and carcinoma. Atrophic gastritis is mostly caused by Helicobacter pylori infection as well as physical and chemical irritation. Patients may experience symptoms such as bloating, belching, and loss of appetite, which are usually not serious if not accompanied by complications. Atrophic gastritis is often accompanied by intestinal epithelial hyperplasia or heterogeneous hyperplasia, and is a precancerous condition of gastric cancer. However, it takes a long process of atrophic gastritis, intestinal epithelial hyperplasia, heteroplasia, and carcinoma for atrophic gastritis to develop into gastric cancer. If it can be detected early, it is important to actively cooperate with the treatment. Patients with atrophic gastritis should go to the hospital in time to receive treatment and try to control the disease to prevent serious effects on the body.