Obesity has been listed by the World Health Organization as one of the five major diseases that seriously endanger human health. It not only affects people’s quality of life, but also easily leads to a series of complications such as diabetes, hypertension, cardiovascular and cerebrovascular diseases, fatty liver and gallstones. In recent years, people are more and more concerned about obesity treatment, and there are numerous weight loss methods and drugs, but most of them are eliminated because of strong side effects and insignificant weight loss effect or easy rebound, while surgery is currently recognized as the only long-term effective method to treat morbid obesity and effectively relieve or even cure its related complications. In Europe and the United States, gastric banding surgery is already a very mature means of weight loss. Gastric banding surgery is the ultimate solution to persistent obesity. In 2011, the International Diabetes Federation (IDF) issued a statement confirming that bariatric surgery is one of the effective treatments for type 2 diabetes and can prevent serious complications of diabetes. The International Diabetes Federation (IDF) issued a statement in 2011 confirming that bariatric surgery is an effective treatment for type 2 diabetes and can prevent serious complications. Adjustable gastric banding surgery is considered one of the most ideal minimally invasive procedures for treating morbid obesity in Europe and the United States, and has the fewest complications and is the safest. This adjustable gastric banding procedure is done mainly through laparoscopic surgery and is made of soft silicone with a firmly attached expandable balloon that wraps around the upper part of the stomach so that the effective gastric volume is only about 30 ml. The weight loss principle of this procedure is simple: first, it makes the stomach smaller; second, it slows down the emptying of food, causing a feeling of satiety. After the procedure, food will quickly fill up the upper part of the stomach when eating, stimulating the vagus nerve located in the upper part of the stomach pouch to create a feeling of fullness, and at the same time, the fluid volume in the balloon located on the inner side of the band is adjusted to control the rate of food emptying. This adjustable gastric banding procedure is a boon for morbidly obese patients and patients with simple dietary obesity, especially in the group of patients with complications due to excessive obesity. In Europe and America, morbid obesity is generally defined as obesity with a BMI greater than 40. In Asia, for physical reasons, morbid obesity is generally considered to be greater than 35 or greater than 32 with obesity comorbidities. This type of patient can achieve weight loss through surgery with rehabilitation measures. Prior to surgery, patients need to undergo a comprehensive health assessment. This step is designed to diagnose all causes of obesity, complications and medical problems associated with surgery. The preoperative evaluation requires the participation of a general practitioner, surgeon and anesthesiologist. The patient undergoes a series of tests and examinations to assess health status and obesity triggers. The GP will use the results to determine whether the patient can achieve weight loss through diet, exercise or medication. Even in obese patients who are determined to be unable to lose weight by other means, endocrine disorders and other abdominal organ problems need to be ruled out, and there are no other organic diseases that make surgery inappropriate before the adjustable gastric banding procedure can be chosen. The patient will meet with the surgeon prior to surgery for further preoperative evaluation. Since many obese individuals may have cardiac and respiratory co-morbidities, a consultation with the appropriate specialist is required before surgery can be determined and considered only if the relevant conditions are under control. Since gastric banding treatment requires patient confidence and long-term cooperation, the patient’s psychological status is also an important part of the preoperative evaluation. The surgery takes about an hour or so and the patient can be discharged 2 days after the surgery. In the time thereafter, the patient’s weight will gradually decrease. This adjustable surgery has the added benefit that the surgeon can also adjust the tightness of the gastric band after surgery, and through regular follow-ups, help patients control their food intake and slowly adjust their eating habits to eliminate rebound at the root and truly achieve weight loss success.” But in the long run, surgery is merely an aid, and the extent of weight loss after surgery also depends on the patient’s own dietary adjustments and exercise status.