Gastric atrophy is a kind of atrophic gastritis, but gastric atrophy is not necessarily an early symptom of gastric cancer. Gastric atrophy is very common and is usually caused by damage to the gastric mucosa. Its development is usually related to dietary habits, smoking and alcohol consumption, Helicobacter pylori infection, and expansion of gastrointestinal inflammation. Gastric atrophy is a precancerous lesion of gastric cancer, but it is not an early symptom of gastric cancer. Most patients with early gastric cancer have no obvious symptoms, and a few have nausea, vomiting or upper gastrointestinal symptoms similar to ulcer disease, without obvious gastric atrophy. Once diagnosed, patients with atrophic gastritis must review gastroscopy once every 1-2 years and also undergo pathological examination, focusing on whether the degree of atrophic gastritis has a tendency to aggravate and detect cancer in advance. Patients with gastric atrophy should eat on time, do not overeat, eat more fresh fruits and vegetables, ensure rich nutrition and protein intake, but do not eat food that is too cold, too hard or too hot, do not eat spicy food, and at the same time quit smoking and alcohol.