There are two things that people care most about when it comes to weight loss metabolic surgery for obesity and diabetes – safety and results. It goes without saying that safety is always in the first place. With the support of modern medical technology, mature surgical centers can basically guarantee the safety of patients, but in terms of surgical results, they are prone to large differences. Numerous cases have proven that clinical medicine relies heavily on experience, and there is a large gap between the maturity of experienced and novice doctors in dealing with diseases, especially in surgery. In the case of weight loss metabolic surgery, for example, mature primary surgeons are not only more precise in performing the surgery, but also better in the details of the operation, so the results of the surgery are often better. Likewise, pre-surgery evaluation and post-surgery care will also have an impact on the surgical results. Mature bariatric metabolic surgery centers can evaluate and predict patients based on surgical guidelines and past case experience to avoid patients overestimating their surgical expectations and causing a psychological gap. Combined with sound post-operative management, most patients can achieve the expected surgical results, but of course, these are based on the patient’s active cooperation and recovery training in accordance with post-operative guidelines. However, due to the complexity of the human body and the special characteristics of obesity and diabetes, the skill of the surgeon in charge and the post-operative health management will have a significant impact on the surgical results.