Diabetic surgery emerged and developed inspired by bariatric surgery. There are various types of bariatric surgery, vertical gastric bundling, adjustable gastric banding, biliopancreatic bypass, biliopancreatic bypass, duodenal diversion, gastrojejunostomy bypass, long branch gastrojejunostomy bypass, banded gastrojejunostomy bypass and sleeve gastrectomy, etc. However, after evidence-based medical testing, many of these procedures have been abandoned by surgeons. Currently, the mainstream procedures are divided into enteroenteric anastomosis, sleeve gastric surgery, gastric bypass surgery and gastric diversion surgery. Enteroenteric anastomosis: For non-obese type 2 diabetic patients Increase the amount of intestinal GLP-1, reduce insulin resistance, promote the proliferation of pancreatic beta cells and stabilize blood glucose. Short operation time (operation time 40 minutes) Sleeve gastric surgery: Suitable for bulimia, huge stomach and people with special requirements for weight such as models. It reduces the volume of the stomach, decreases the secretion of hormones that stimulate the production of hunger, does not require the placement of foreign objects in the body, does not change the physiological state of the gastrointestinal tract, and does not interfere with the normal process of digestion and absorption of food. Gastric bypass surgery: For obese patients Rearrange the position of the small intestine, change the pathway of food through the digestive tract, slow down gastric emptying, shorten the small intestine, and limit the absorption of high calories Gastric diversion surgery: (BMI>27.5) For obese type 2 diabetic patients Change the pathway of food flow, do not interfere with the normal digestion and absorption process of food, avoid malnutrition, at the same time reduce stimulation, reduce insulin resistance and promote islet cell proliferation to restore islet function, with good long-term effects of surgery. Clinical observation has confirmed that the overall efficiency of gastric diversion surgery for type 2 diabetes is 95%, and the remission rate is 83%. In 2013, the number of patients with diabetes surgery reached 382 million worldwide, and the prevalence of diabetes surgery in China has soared from 0.67% 30 years ago to 11.6% today, a 17-fold increase, with the total number of patients exceeding 114 million, accounting for about one-third of the world’s total. The total number of patients is more than 114 million, accounting for about one-third of the world’s total, and has become the world’s largest country for diabetes surgery. With the popularization of diabetes knowledge and the scientific awareness and improvement of the surgery among doctors and patients, it will become more and more common for diabetic patients to receive gastric diversion surgery to treat their diabetes, and more and more diabetic patients will regain their health.