There is a special group of type 2 diabetic patients, i.e. patients with diabetes combined with obesity, overweight or abdominal obesity, who no longer need to be limited to traditional medical treatment, gastric bypass surgery has long been a new option for diabetics! Some diabetics may ask, “Is this surgery available to anyone who has diabetes? Gastric bypass surgery is not available to everyone, because the Chinese Guidelines for the Surgical Treatment of Obesity and Diabetes (2014) stipulate that gastric bypass surgery can only be performed on glucose patients who meet the following conditions: 1, the duration of type 2 diabetes ≤ 15 years, and the pancreatic islets still have some insulin-secreting function, and fasting serum C-peptide ≥ 1/2 of the lower limit of normal value. 2, BMI (body mass index) ≥ 27.5 kg/m2. 3, male waist circumference ≥ 90 cm, and male waist circumference ≥ 90 cm. If the waist circumference of men is ≥90cm and that of women is ≥85cm, the recommended grade of surgery can be increased as appropriate. 4, The recommended age for surgery is 16~65 years old. When it comes to gastric bypass surgery, it is done by reconstructing the digestive tract and establishing a small gastric bursa in the upper part of the stomach to limit food intake; at the same time, food is bypassed by anastomosing the distal jejunum and the gastric bursa, so that food intake and absorption can be greatly controlled by bypassing the large part of the stomach, duodenum and the first section of the jejunum. It is the “gold standard” procedure for weight loss and diabetes, and has the best risk-benefit ratio. It is suitable for all forms of obesity and type 2 diabetes.