The thinning and whitening of the gastric mucosa suggests chronic atrophic gastritis. Chronic atrophic gastritis is under the influence of Helicobacter pylori infection, duodenal reflux or immune abnormalities and other undesirable factors, repeated damage occurs, resulting in atrophy of the intrinsic glands, thinning of the gastric mucosa, which may or may not be accompanied by intestinal epithelial hyperplasia, which may be manifested in gastroscopy as a reddish-white color, with the white predominant. Patients with chronic atrophic gastritis mostly show symptoms such as abdominal pain and bloating, postprandial fullness, acid regurgitation and belching, nausea, loss of appetite, and fatigue. Chronic atrophic gastritis can usually be effectively controlled after active treatment, but patients with intestinal epithelial hyperplasia have a certain possibility of cancer, which should be taken seriously. If the patient appears to have thinning and whitening of gastric mucosa, it is recommended to consult a doctor in time and receive treatment actively so as not to delay the condition.