Gastric ulcer is a chronic disease with a tendency to recur, and the duration of the disease in many patients can be up to decades. Therefore, the current view is that after a gastric ulcer has healed, a very important issue is how to prevent recurrence. Sometimes this problem is even more important than the treatment of primary ulcers, because as the number of recurrent ulcers increases, the chances of ulcer bleeding, perforation and obstruction will also increase. It is generally believed that after the healing of gastric ulcers, maintenance therapy with small doses of drugs should be given, usually for six months to one year, and some people advocate maintenance therapy for one and a half years, but in any case, we believe that the time should not be less than six months But in any case, we believe that the duration should not be less than half a year, and then 1-2 years after intermittent medication. There are various choices of drugs, such as metformin, gastric speed, colloidal bismuth and so on. The choice of those drugs can be determined according to the specific situation. In addition, another important issue is the prevention of triggering factors, such as keeping a happy spirit, paying attention to rest, combining work and rest, quitting smoking, drinking less alcohol, avoiding the intake of cold and stimulating foods (such as strong tea, strong coffee, spicy condiments) and drugs that damage the gastric mucosa. However, it should also be noted that in the non-acute phase of ulcers, it is not necessary to prescribe a special diet to avoid adverse consequences such as malnutrition, anemia and weight loss.