Medico-surgical methods refer to the use of surgery to reduce weight and improve the systemic symptoms of obesity such as overweight, high blood pressure, high blood lipids, diabetes and other symptoms. Since “bariatric surgery” was rated as one of the top ten 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. Weight loss surgery is a kind of minimally invasive surgery, which improves the body’s intake and absorption through the adjustment of the human gastrointestinal structure, which simply means that people “eat less” and “absorb less”, thus achieving the purpose of reducing weight. The establishment of healthy and reasonable eating habits after surgery can also enable obese patients to maintain a normal weight in the long term. 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 volume 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. In contrast, gastric bypass surgery only divides the stomach into two parts, and the re-formed small gastric sac with a volume of about 30 cc is connected to the small intestine bypass to achieve restriction of food intake and reduction of food absorption, while the large stomach remains in the body. In addition to the change in the flow of food after surgery, the body absorbs less nutrients, and in the case where calories consumed are less than calories consumed, slimming can therefore be achieved. Compared to patients who do not undergo weight loss surgery, the risk of developing diabetes is greatly reduced after weight loss, 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, and we hope that more people can achieve a healthy and happy life by reducing their weight through scientific means!