Gastric mucosa thickening is one of the clinical manifestations of “chronic atrophic gastritis” (intestinal, atypical hyperplasia), which is a common gastric disease. The chronic atrophic gastritis is a common gastric disease. Inappropriate diet, long-term addiction to alcohol and tobacco, drug abuse, chronic inflammation of the upper respiratory tract, central nervous system dysfunction, damage to the gastric mucosa, as well as after a major gastrectomy, the removal of gastrin-secreting gastric sinus region, resulting in gastric mucosa nutritional disorders, etc., are prone to damage to the gastric mucosa and atrophy, inflammatory changes. The prevention methods are mainly the following. 1, moderate alcohol consumption, do not smoke, to avoid nicotine damage to the gastric mucosa; avoid long-term use of anti-inflammatory painkillers, such as aspirin and corticosteroids, to reduce gastric mucosal damage. 2, the food eaten should be fresh and nutritious, to ensure that there is sufficient protein, vitamins and iron intake. Eat on time, do not overeat, do not eat too cold or too hot food, do not use or use less stimulating condiments such as fresh spicy powder, etc. 3.Regular examination, gastroscopy if necessary. 4.In case of worsening symptoms, emaciation, anorexia, black stool, etc., go to hospital for examination in time.