1 and the course of type 2 diabetes is less than or equal to15 years, and the islet still has certain insulin secretion function, and the fasting serum C-peptide level is more than or equal to 2/1of the lower limit of normal value;

2. Body mass index ≥ 27.5 kg/m2; When the waist circumference of men is greater than or equal to ≥90cm and that of women is greater than or equal to ≥85cm, the recommended level of surgery can be raised as appropriate;

3. suggested age 16-65 years old;

4. Patients with a body mass index of 25.0-27.4 kg/m2 should carefully consider surgery.

For the above criteria, doctors should also consider the composition of metabolic syndrome or the existence of complications. Please consult a doctor for details.