Many obese people have a characteristic of large appetite and strong appetite. For this kind of obese people, the effect of simple diet and exercise to lose weight is not much, especially when the weight BMI exceeds 28, not only is it difficult to control appetite, but also improper exercise will cause damage to knees and joints and increase the burden on the body. And weight loss surgery controls weight by adjusting the structure of the gastrointestinal tract, reducing stomach capacity, reducing food intake and absorption, in other words, through weight loss surgery, I control your stomach, it fundamentally solves the problem of obesity, so the surgery can also maintain a reasonable weight for a long time and is not easy to rebound. The two mainstream medical weight loss methods today are two, one is sleeve gastrectomy, which is often referred to as gastric reduction, in which the removal of two-thirds of the stomach does not change the physiological state of the gastrointestinal tract, does not interfere with the normal digestion and absorption of food, does not affect the absorption of vitamins and minerals, and has fewer long-term side effects and faster recovery. The other is gastric bypass surgery, which first divides the stomach into two parts, the smaller upper part and the larger lower part, and then truncates the small intestine and rearranges its position, changing the pathway of food through the digestive tract, slowing down gastric emptying, shortening the small intestine, and reducing absorption. Compared with traditional treatment options, the preferred surgical procedure for weight loss surgery is minimally invasive laparoscopic surgery, which is less invasive, faster recovery, and less risky, and generally takes 60-90 minutes to operate. Weight loss surgery was first started in the 1950s and has a history of 70 years of application. It is a mature, conventional and safe treatment method, and is also the preferred treatment measure for people with severe obesity. The United States, the United Kingdom, Australia and other European and American countries have now more than one million diabetic patients have said goodbye to diabetes through surgery. It can be said that bariatric surgery is a safe and reliable long-term effective method for treating obesity and a variety of concomitant diseases.