Patients with diabetic gastric ulcers need to be treated for diabetes and gastric ulcers, such as medication for lowering glucose, acid suppression, and protection of gastric mucosa, as well as dietary control and appropriate exercise. Diabetic patients should pay attention to diet management, control the total calorie intake, maintain a low-sugar, low-fat diet, appropriate physical exercise, such as jogging, brisk walking, jumping rope, etc., and also need to be treated with medication under the guidance of a doctor, such as acarbose, metformin and so on. Gastric ulcers can be treated by maintaining small meals and a light, easy-to-digest diet, as well as acid-suppressing medications, such as omeprazole, cimetidine, etc., gastric mucosal protectants, such as Rebaproxate, thioglycollate, etc., and quadruple therapy, i.e., omeprazole, bismuth potassium citrate combined with metronidazole, amoxicillin, etc., when accompanied by Helicobacter pylori infection. Patients diagnosed with diabetes mellitus with gastric ulcer should be treated under doctor’s supervision.