Advantage 1: Cure diabetes, normal blood sugar, patients get rid of lifelong medication and do not need to control their diet. There are two main reasons for the development of diabetes: one is insulin resistance. The second is islet failure. After gastric diversion surgery, insulin resistance is gone, islet function is restored, and diabetes is gone. Advantage 2: Diabetic complications are recovered. While internal medicine cannot reverse the complications that have occurred in patients, after gastric diversion surgery, most patients gradually recover from diabetic complications such as hand and foot numbness, retinopathy, diabetic foot, abnormal urine protein, and hypertension. Advantage 3: Avoid the occurrence of disabling and fatal conditions caused by diabetes. When diabetes develops to a serious level, it can pose a serious threat to a person’s life safety. After gastric diversion surgery, blood sugar is normal, complications no longer occur, and the danger of diabetes is gone. Advantage 4: Weight loss in obese patients and weight gain in thinner patients. Gastric diversion surgery can bring some unexpected effects to patients, very thin patients will gain weight after surgery, and very fat patients achieve satisfactory weight loss after surgery. Advantage 5: Reduce the financial burden of the patient. The relative cost is not high, which is the obvious advantage of gastric diversion surgery. According to the survey, most diabetic patients who have been ill for more than 5 years will develop various complications, and the cost of treating these complications is very high. For diabetic patients, a single surgical treatment, complications no longer appear and the financial burden is reduced. Advantage 6: Gastric diversion surgery has low risk and fast recovery after surgery. The surgery is easy and quick, with little trauma, quick recovery and no recurrence, and you can eat in 3 days after the surgery and be discharged in a week. Post-operative diet and nutrition absorption are not affected.