There is no specific time for how long chronic atrophic gastritis with erosion can live, but it mainly depends on the severity of the disease, whether active treatment and other factors. Chronic atrophic gastritis refers to the atrophy and reduction in the number of epithelium and glands of the gastric mucosa, resulting in thinning of the gastric mucosa and thickening of the mucosal base, which can be accompanied by intestinal epithelial hyperplasia and atypical hyperplasia in severe cases. If accompanied by erosion, it suggests ulceration and bleeding of the gastric mucosa. In this case, the diagnosis should be made as early as possible, i.e., to clarify the benign or malignant nature of the erosion. In benign cases, lifestyle improvements such as diet, alcohol consumption, and medications should be made, and H. pylori infection should be eradicated. In contrast, those with malignant or precancerous lesions require early surgical treatment, i.e., major gastrectomy, and postoperative chemotherapy is feasible if necessary. Early treatment without metastasis can result in a 5-year survival rate of more than 80%. Patients suffering from chronic atrophic gastritis with erosion are advised to maintain a good state of mind and diet and actively cooperate with the treatment of the disease in order to overcome the disease and prolong their lives.