The severity of chronic atrophic gastritis with erosion depends on the results of gastroscopic pathological biopsy and cannot be generalized. In chronic atrophic gastritis with erosion, the gastroscopic report mostly suggests atrophy of the gastric mucosa, surface vascularity, and partial erosion, which is not serious and is mostly related to overeating, irregular diet, and frequent consumption of irritating foods, and can gradually recover by taking drugs such as omeprazole, morpholine, and pantoprazole to inhibit gastric acid and protect the gastric mucosa. If the report suggests that there is intestinalization or atypical hyperplasia of gastric mucosa in the erosion and atrophy area, it suggests the possibility of cancer, which is a precancerous lesion and needs to be reviewed regularly while treatment. If the report suggests severe atypical hyperplasia, the situation is more serious and requires immediate gastroscopic mucosal dissection. Patients with gastric disease need to pay more attention to their diet. They should eat easily digestible, non-irritating food, less acidic, sweet and spicy stimulating food, and avoid smoking, alcohol, strong tea and coffee.