Gastrectomy for weight loss refers to sleeve gastrectomy, a type of gastric reduction surgery that is generally used for the surgical treatment of obesity and diabetes. Sleeve gastrectomy is one of the most commonly used weight loss surgeries, mainly for the treatment of obesity seriously affects the health of the body and can not get good results through other means. Currently, the surgery is mostly minimally invasive, through the great curvature of the stomach part of the gastric resection, so as to improve gastric volume, to avoid patients from eating too much and to play a role in the effect of weight loss. Although sleeve stomach surgery is beneficial to some patients, it is not suitable for all patients. Before the surgery, it is important to go to the hospital for relevant examinations to rule out contraindications to the surgery. In addition, after gastric surgery, patients still need to control their diet properly, eat small meals and avoid eating too much greasy food, which can easily lead to obesity again.