Type 2 diabetes, which accounts for about 90% of the total number of diabetes mellitus. At present, the number of people with type 2 diabetes in China has reached more than 50 million, and the incidence is still increasing. Diabetes is often combined with hyperlipidemia and hypertension, which brings about serious complications such as cardiovascular and cerebrovascular diseases, renal damage, limb necrosis, and fundus vasculopathy, which seriously affect the quality of life and life expectancy of patients and impose a heavy burden on patients and society. At present, type 2 diabetes is mainly treated by internal medicine, including diet control, exercise and lifestyle intervention, oral hypoglycemic drugs and insulin injection, but the effect is not ideal and easily leads to a decline in quality of life. In addition, these treatments cannot completely prevent the occurrence of diabetic complications. In this condition, diabetes can be treated by weight loss metabolic surgery, which is also very effective in the treatment of type 2 diabetes, not only improving blood glucose and metabolic disorders, but also reducing the occurrence of diabetic complications in the long term. A large amount of clinical data proves that the current complete remission rate (clinical cure rate) of type 2 diabetes by weight reduction metabolic surgery reaches more than 80%, and the overall effectiveness reaches more than 95%, and it becomes a reality for type 2 diabetes patients to get rid of internal medicine to keep their blood sugar stable. Although diabetes brings many inconveniences to patients’ lives, as long as it can be controlled scientifically and regularly, there is no problem to live for decades more without complications. On the contrary, if you do not control it and give up on yourself, it is possible that various complications will come in a few years and life will fall into the abyss from then on.