Gastric diversion is a procedure that has been around for more than a hundred years. It gradually developed and was mainly used in the field of weight loss, only later it was found that fat people who had weight loss surgery had their blood sugar unexpectedly returned to normal, and finally after clinical validation, this surgery eventually became one of the main treatments for diabetes. In the beginning, the main procedure of this surgery was relatively single, and there were many problems encountered, especially more post-operative complications. Guangzhou Jinshazhou Hospital has been committed to upgrading and improving this surgery since the first case was carried out in 2004, and has gradually realized the subdivision of metabolic surgery, and is now able to skillfully carry out four types of surgery, including entero-enteric anastomosis, gastric diversion surgery, sleeve gastric surgery and third-generation gastric diversion surgery, for the different needs of weight reduction and sugar reduction. In the past, many people used to choose the same operation and plan, and there were thousands of people. Nowadays, the final choice of operation will be based on the patient’s preoperative examination and evaluation, and the final choice will be the one with the best effect, so the treatment will be more personalized and targeted, and the effect will definitely be the best, no matter it is weight reduction or sugar reduction. However, it is important to know that the surgery itself requires a lot of requirements, such as the requirements of the hospital, the requirements of the doctor, the requirements of the patient and the requirements of the post-operative rehabilitation management, which all govern the final results of the surgery. Therefore, patients must know more and consult more before doing the surgery, not to do it blindly, so that they are also responsible for their own health. Characteristics of gastric diversion surgery : The causes of diabetes: First, K cells distributed in the gastrointestinal tract are stimulated by food to secrete insulin resistance factor, which makes the body insulin resistant. Secondly, islet cells are damaged by insulin resistance factor and apoptosis. The unique feature of gastric diversion surgery is that it changes the physiological flow of food, which is accomplished through the steps of gastric blockage, gastrointestinal anastomosis, and enteroenteric anastomosis. After the surgery, insulin resistance in the patient’s body is eliminated, and the way food flows through the body after the surgery also promotes insulin secretion in the patient’s body, reduces apoptosis and proliferates islet cells, restores islet function, and effectively treats diabetes. In addition to the normalization of blood glucose, the patient recovered well from a series of complications that accompanied him. For example, retinopathy, diabetic nephropathy, diabetic dermatitis, diabetic sexual dysfunction, hypertension, hyperlipidemia, etc. were gradually cured. The occurrence of serious complications has been eliminated, and the occurrence of disabling and fatal situations has been avoided. Gastric diversion surgery (GBP) is less traumatic, low risk, fast recovery and no recurrence; most of the patients recover their blood sugar to normal before discharge after surgery and stop using hypoglycemic drugs and insulin; a small number of patients have a slightly longer recovery time, which mainly depends on the degree of the patient’s preoperative islet function impairment. Patients who are treated early will recover more quickly and completely.