Chronic atrophic gastritis is a type of chronic gastritis, not cancer, but it has some cancer potential, but not all atrophic gastritis will turn into cancer. When chronic gastritis affects the entire mucosa or is active, precancerous states such as intestinal epithelial hyperplasia, pseudopyloric glandular hyperplasia, atrophy and atypical hyperplasia may be treated with short-term or long-term intermittent therapy. In chronic atrophic gastritis with intestinal epithelial hyperplasia, a very small number of patients may develop gastric cancer. Atrophic gastritis is classified as mild, moderate or severe. If it develops further, intestinal epithelial hyperplasia and atypical hyperplasia may appear, both of which are considered to be the pre-cancerous stage of gastric cancer, so some of the atrophic gastritis may be transformed into gastric cancer. When the symptoms of chronic atrophic gastritis appear, they should be treated actively, and the specific treatment modalities are as follows: (1) eradication of Helicobacter pylori infection; (2) gastric mucosal protector aluminum thioglycollate tablets or suspension: 1 hour before meals and at bedtime. Colloidal bismuth subcitrate half an hour before meals and at bedtime, should not be used for more than 8 weeks. Teprenone, half an hour before meals and at bedtime, should not be used for more than 8 weeks. (3) H2 receptor blockers: ranitidine, famotidine, cimetidine, can not be taken orally can be used for intravenous drip. (4) Gastric stimulants: domperidone, cisapride, metoclopramide, etc. are taken orally. (5) Digestive aids and dilute hydrochloric acid: for chronic atrophic gastritis, without mucosal erosion, especially gastric body atrophic gastritis can be used as a compensatory treatment, such as multi-enzyme tablets or pancreatic enzyme tablets; pepsin combination; (6) for combined pernicious anemia need lifelong injection of vitamin B12: once daily. For iron deficiency anemia, iron supplementation, ferrous sulfate tablets 0.3g or ferrous succinate 100mg along with vitamin C, orally. Some trace elements such as zinc, selenium, beta carotene, etc. can be supplemented appropriately. 2, diet rules: eat less spicy food, less pickled products, smoked food; avoid smoking and alcohol, light diet. Therefore, chronic atrophic gastritis is not cancer, but patients need to be actively treated under the guidance of clinicians and pay attention to lifestyle and diet so as not to aggravate the disease.