Obesity is the 21st century epidemic, a serious threat to human health and life expectancy, but also can bring serious psychological and social problems to patients. The incidence of obesity in China (including adolescents and children) is increasing by about 20-30%, and the growth rate is one of the fastest in the international community. As our wealth grows, the health status of the nation is becoming a cause for concern! Each year, China spends up to 10 billion RMB on treatment for obesity-related diseases. The causes of obesity are related to diet exercise and genetic factors. People control their weight by diet and exercise, and most of them are effective. However, there are still some patients with poor weight reduction effect, the effect can not be maintained for a long time, the rebound phenomenon is frequent, this part of the patients mainly have the following two situations: the first category is morbid obesity, it is difficult to control weight through diet and exercise and other conventional methods; the second category is long-term excessive obesity has caused serious metabolic complications, if obesity continues, they will face heart disease, kidney disease, cerebrovascular disease, tumor and the threat of serious respiratory diseases. These patients need medical treatment to reduce their weight. With the development of science, it is now possible to solve this problem through minimally invasive surgical methods, which can be done by making a few small holes in the abdomen. The results of the surgery are very satisfactory and the patient can p 50%-60% less weight within 1-2 years after the surgery. For example, Wang currently weighs 130 kg, while his ideal weight is 60 kg, he can expect to drop to 95-88 kg after surgery. In addition to the numerical reduction in weight, more importantly, diabetes, cardiac and cerebral diseases and apnea syndrome complicated by morbid obesity are well controlled, and hyperglycemia and hypertension will be substantially improved after surgery. However, in order to do such treatment, it is necessary to have a diagnosis and evaluation by a bariatric specialist before treatment can be performed. At present, we commonly use adjustable gastric banding and gastric diversion for weight loss surgery, which have good clinical results. There is a minimally invasive surgical approach, so patients have less trauma and faster recovery. Which patients need to undergo minimally invasive surgery? 1, body mass index (BMI) greater than 35 or more or more than 100% of the ideal weight; 2, waist circumference: men > 90cm, women > 80cm; 3, BMI ≥ 32kg/m2 patients, but disorders of lipid metabolism, stable or increased weight for five consecutive years; 4, diet control for more than six months with poor results; 5, there is a clear understanding of surgical weight reduction, no mental identified abnormal; 6 6, no generation x disease or confirmed obesity (need endocrinologist consultation to determine); 7, age 16-65 years; Note: Body mass index (BMI) = weight (kg)/height (m).