With more and more patients suffering from obesity and type 2 diabetes, people are becoming familiar with surgical weight loss and metabolic surgery, which is indeed more effective than traditional medical treatment, has a lower rebound rate, and can alleviate and treat all the complications of obesity while losing weight. There are many different types of bariatric surgery, and the search for better ways to help obese patients reduce their weight is ongoing. The two most common forms of weight loss surgery are laparoscopic gastric bypass and laparoscopic sleeve gastrectomy (gastric reduction), which are currently the most stable and accepted surgical procedures. The principle of gastric bypass surgery is to limit food intake by reconstructing the digestive tract and creating a small gastric bursa in the upper part of the stomach; at the same time, food is bypassed by anastomosing the distal jejunum and the gastric bursa, thus greatly controlling food intake and absorption by bypassing the large part of the stomach, duodenum and the first jejunum. This procedure is not only used for weight loss, but is also the “gold standard” procedure for obese type 2 diabetes, and many type 2 diabetics have gone off medication to control their sugar after undergoing the procedure. The principle of laparoscopic sleeve gastrectomy is to retain 2-6cm of the gastric sinus above the pylorus in the direction of the large curve of the stomach, along the long axis of the stomach to remove the bulk of the stomach, so that the residual stomach is “banana-shaped” volume of about 60-80cm, changing the volume of the stomach, thereby reducing food intake, eat less naturally thin. But there are many friends after understanding, do not know which way they can reduce weight, it is not based on simple height and weight can be judged, surgery is to be carried out in accordance with very strict indications for surgery, need to be examined by doctors to obtain data to determine the right kind of surgery according to each person’s situation.