Advantage 1: Cure diabetes, normal blood sugar, patients get rid of lifelong medication, no need to control diet. There are two main causes of diabetes: one is insulin resistance. The second is islet failure. After gastric diversion surgery, insulin resistance is gone, pancreatic islet function is restored, and diabetes is gone. Advantage 2: Diabetic complications get recovered. Internal medicine cannot reverse the complications that have already occurred in the patients, while after gastric diversion surgery, most of the diabetic complications such as numbness of hands and feet, retinopathy, diabetic foot, abnormal urinary protein, hypertension and so on gradually recovered. Advantage 3: Avoid the occurrence of disabling and fatal conditions caused by diabetes. When diabetes develops to a serious degree, it can pose a serious threat to a person’s life. After gastric diversion surgery, blood sugar is normalized, complications no longer occur, and the dangers of diabetes are gone. Advantage 4: Obese patients lose weight and thinner patients gain weight. Gastric diversion surgery can bring some unexpected results to patients, very thin patients will increase their weight after surgery, and very fat patients achieve satisfactory weight loss after surgery. Advantage 5: Reduces the financial burden on the patient. Relatively inexpensive, this is the obvious advantage of gastric diversion surgery. According to the survey, most of the diabetic patients who have been ill for more than 5 years will suffer from various complications, and the cost of treating these complications is very high. For diabetic patients, a surgical treatment, complications no longer appear, the financial burden is reduced. Advantage 6: Gastric diversion surgery has low risk and quick recovery after surgery. The surgery is simple and quick, with little trauma, fast recovery, no recurrence, and you can eat three days after the surgery and be discharged from the hospital in a week. Postoperative diet and nutritional absorption are not affected.