It is important to understand that weight loss surgery and liposuction are not the same kind of surgery, they are two completely different surgeries. Liposuction surgery: Liposuction surgery is one of the plastic and cosmetic surgery body sculpting procedures. The principle is to suck out the excess fat from a certain part of the body through the method of negative pressure attraction in order to achieve the purpose of local slimming in a short period of time. The common areas of whole body liposuction are: face, chin, neck, shoulder and back, limbs, hands and feet, upper and lower abdomen, side waist, upper buttocks, hip reduction, breast reduction and buttock lift, etc. Weight reduction surgery: Weight reduction surgery means using medical-surgical means to reduce the weight of obese patients and change their metabolic functions by controlling intake and reducing absorption, so as to cure or alleviate their accompanying symptoms. For example, medical treatment for overweight, hypertension, high blood pressure, diabetes and many other concomitant diseases. Weight loss surgery is the two mainstream medical weight loss methods today. There are two types of weight loss surgery, one is sleeve gastrectomy, which is often referred to as gastric reduction, in which the removal of two-thirds of the stomach does not change the physiological state of the gastrointestinal tract, does not interfere with the normal digestion and absorption of food, does not affect the absorption of vitamins and minerals, has fewer long-term side effects, and has a faster recovery from surgery, and is a widely used weight loss procedure in Europe. Indications for gastric reduction surgery: Those with one of the following 1~5 can be considered for gastric reduction surgery treatment; 1. Simple obesity with BMI>32kg/m2 is recommended for weight reduction surgery; 2. Age 16 to 65 years; no other contraindications to abdominal surgery, etc.; 3. When waist circumference >90cm for men and >80cm for women, the recommended level of surgery can be increased as appropriate; 4. Stable or stable for more than five consecutive years Increased body weight with BMI ≥ 32 kg/m2; 5. Confirmation of the presence of metabolic disorder syndrome associated with obesity, such as: type 2 diabetes, fatty liver, cardiovascular disease, hyperglycemia, hyperlipidemia, hypertension, sleep apnea syndrome, etc., and the predicted weight loss can be effectively treated. The other is gastric bypass surgery, which first divides the stomach into two parts, the smaller upper part, and the larger lower part, and then truncates the small intestine, rearranges the position of the small intestine, changes the pathway of food through the digestive tract, slows gastric emptying, shortens the small intestine, and reduces absorption. Generally speaking, type 2 diabetic patients aged 25 to 65 years old who have had diabetes for less than 15 years and whose pancreatic beta cells are still functional can undergo gastric diversion surgery if they meet one of the following conditions: their fasting blood sugar is greater than or equal to 7.0 mmol/L. Their random blood glucose is greater than or equal to 11.1 mmol/L. Their 2-hour postprandial blood glucose is greater than or equal to 11.1 mmol/L. Diabetic patients should have glycosylated hemoglobin, fasting glucose, insulin antibody, islet cell antibody, electrocardiogram, cardiac ultrasound, pulmonary function, gastroscopy, glutamic acid decarboxylase antibody, oral glucose tolerance test and insulin C-peptide release test before undergoing gastrointestinal diversion surgery in order to make the surgery go smoothly. Compared with traditional treatment options, weight loss surgery is a minimally invasive laparoscopic surgery, with less trauma, faster recovery and less risk.