Chronic atrophic gastritis is a chronic digestive disease characterized by atrophy of the epithelium and glands of the gastric mucosa, a decrease in number, thinning of the gastric mucosa, thickening of the mucosal base, or with pyloric glandular hyperplasia and intestinal glandular hyperplasia, or atypical hyperplasia. It is usually not serious, but relatively more serious if cancer occurs. The clinical manifestations of chronic atrophic gastritis are generally not serious, often presenting with symptoms such as vague pain in the upper abdomen, bloating, belching, loss of appetite, or wasting and anemia, but clinical studies have found that there is no significant correlation between the presence or absence of symptoms and the severity of symptoms and the degree of atrophy seen on endoscopy and pathological examination of the gastric mucosa. Many people are anxious and nervous because they hear that atrophic gastritis is precancerous, but in fact, atrophic gastritis is very common in the population, it is a manifestation of aging of the stomach as an organ, and if there is no heterogeneous hyperplasia, the risk of cancer is not great, and even if precancerous lesions appear, they can be prevented from stomach cancer after regular review and endoscopic treatment. There is no effective treatment for chronic atrophic gastritis, but mainly symptomatic treatment. The atrophy can be improved or reversed in some patients; therefore, when chronic atrophic gastritis is diagnosed, the patient should cooperate with the treatment under the guidance of clinicians and should not be overly worried.