Since bariatric surgery was named one of the top 10 medical innovations by the Cleveland Medical Center in the United States, more and more obese patients have been receiving this treatment and achieving good weight loss results. Gastric resection is a minimally invasive bariatric surgery that can lower the body fat regulating point and ultimately achieve the desired weight loss. Compared with conventional open surgery, laparoscopic surgery does not require an open abdomen. Compared with conventional surgery, the advantages of less trauma, less bleeding, faster recovery and relatively less complications are more obvious. Among them, sleeve gastrectomy is to remove the sleeve of the greater curvature of the stomach, preserving 100cc of stomach capacity to reduce the secretion of gastric hunger hormone (ghrelin) and significantly reduce hunger to lose weight. The surgery is simpler, safer and has a lower percentage of complications. When it comes to bariatric surgery, the risk of diabetes is greatly reduced after weight loss compared to patients who do not undergo bariatric surgery, and it is also effective in relieving the pressure of weight on the bones, thus relieving osteoarthritis, as well as effectively addressing and improving cardiovascular disease. Weight loss surgery is one of the most effective treatment options for polycystic ovary syndrome in combination with obesity. In fact, patients who undergo bariatric surgery experience varying degrees of improvement in overall, emotional, physical, social and energy recovery compared to medication. Weight loss is a long-term and arduous project, we need to understand the body fat adjustment point and reduce weight through scientific weight loss means in order to obtain a healthy and happy life! The Chinese Guidelines for the Surgical Treatment of Obesity (2007) stipulate that those who meet any one of the first three of the following and have the fourth condition can perform weight reduction surgery: 1, BMI ≥ 32kgm22, confirmed the emergence of obesity-related metabolic disorder syndrome, such as: hypertension, diabetes, fatty liver, sleep apnea syndrome, hyperlipidemia, etc., and the prediction of weight reduction is effective. 3, waist circumference : ≥90cm for men and ≥85cm for women; dyslipidemia.4. Other: no alcohol or drug dependence, no serious mental and intellectual impairment; other weight loss methods are ineffective or intolerable; 16-65 years old; understanding and acceptance of surgery and postoperative lifestyle changes.