Surgery is an important treatment method after diet, exercise therapy, oral hypoglycemic drug therapy and insulin therapy for diabetes, and the cost of surgical treatment is about 50,000 in a tertiary hospital, with slight differences in cost at different hospital levels. At present, the main surgical treatment method is gastric diversion, which uses surgical methods to cause a short circuit between the stomach and the small intestine, so that food enters directly into the lower jejunum, thus reducing the absorption of food, achieving the purpose of reducing weight and keeping blood sugar under control. Not all diabetic patients can undergo surgery. Surgery for diabetes is mainly applicable to type 2 diabetic patients who are severely obese and whose treatment with oral hypoglycemic drugs is ineffective.