Minimally invasive surgery refers to making an incision of about one centimeter in the navel and placing a porous cannula for surgery, with few postoperative scars; Open surgery is a long incision surgery performed directly on the patient's body, which is a traditional open surgery. After gastrectomy to lose weight, the set point of body fat can be lowered, and finally the ideal weight loss goal can be achieved. In addition, it can also reduce the burden on the stomach and reduce the risk of metabolic diseases such as hypertension, hyperglycemia, hyperlipidemia and fatty liver.