There is no such thing as chronic non-atrophic gastritis C1, it should be chronic atrophic gastritis stage C1, which refers to chronic atrophic gastritis confined to the gastric antrum. Chronic atrophic gastritis is a variety of factors lead to gastric mucosal epithelium and glands atrophy, gastric mucosal thinning and even intestinal metaplasia, which can induce epigastric vague pain, distension, belching, nausea, vomiting, loss of appetite, anemia and other symptoms. The C1 stage of chronic atrophic gastritis refers to the atrophy of the gastric sinus mucosa, which may be related to factors such as Helicobacter pylori infection, gastric acid, bile, drugs, spicy food, etc., exceeding the protective barrier of the gastric mucosa, which in turn causes inflammation resulting in glandular atrophy, a decrease in the number of mural cells and gastric host cells, a gradual thinning of the gastric mucosa, and gastrointestinal dysfunction with or without intestinal metaplasia. If the patient is diagnosed with chronic atrophic gastritis C1 stage, it is recommended to go to the regular hospital in time, under the guidance of the doctor to carry out targeted treatment, in order to reduce the adverse effects of the disease.