Gastric reduction surgery is almost always available in public tertiary hospitals that perform laparoscopic radical gastric cancer surgery. Gastric reduction surgery, also known as bariatric surgery, is mostly performed in the gastroenterology or bariatric surgery departments of public hospitals. The fundamental principle of the surgery is to partially remove the stomach under laparoscopy, so as to reduce the volume of the stomach, reduce the intake of food, reduce the absorption of energy, and achieve the purpose of weight loss. Therefore, at present, in regular public tertiary hospitals, as long as they carry out laparoscopic gastric surgery, almost all of them can do gastric reduction surgery.