The history of the development of liposuction surgery has been nearly 80 years, is a very mature and safe means of weight loss, body contouring Liposuction surgery compared to conventional weight loss has four major advantages: (1) immediate results after surgery, free of dieting and weight loss pain. (2) will not rebound: the total number of fat cells in the human body remains basically unchanged. When a person becomes fat, it is only the size of each cell that becomes larger. Liposuction surgery can reduce the local fat cells by more than three quarters, and basically will not rebound after surgery. (3) Liposuction surgery can sculpt the local area. For example, sucking the curved leg into straight leg, sucking off the butterfly sleeve on the back outer side of the upper arm, improving the shape of the face and double chin and so on. (4) The suctioned fat can be used for refilling. For facial depressions and small breasts. Introduction of Surgical Technique: The most basic surgical technique of liposuction is the negative pressure liposuction technique, in which a negative pressure pump is used to evenly suction out the fat cells diluted by tumescent fluid to achieve weight loss. All liposuction procedures are based on the negative pressure technique. At the beginning of the procedure, the surgeon injects a liquid with an anesthetic effect (swelling fluid) into the area to be liposuctioned to dilute the fat. If our fat tissue is compared to rice, then the fat injected with the swelling fluid is the equivalent of rice porridge. This “rice porridge” is more favorable for suction and reduces damage to blood vessels and nerves. The procedure of injecting the swelling solution is painful, so a simple anesthesia (sedation anesthesia) is usually required for large areas of liposuction. After the injection of the swelling solution, the doctor will use a liposuction needle connected to a negative pressure pump to pump out the fat with negative pressure, i.e. negative pressure suction technique. Besides, there are also the following auxiliary techniques: 1. Hydrodynamic liposuction: Hydrodynamic liposuction is an improvement of the process of injecting swelling liquid to achieve the purpose of injecting water while suctioning fat. 2.Ultrasonic auxiliary: Ultrasonic liposuction is an auxiliary to the liposuction process, which is mainly divided into in vivo and in vitro. It has two auxiliary roles to the conventional negative pressure liposuction, firstly, it can make the fat emulsified through ultrasound before liposuction, which makes the liposuction easier. Secondly, it can stimulate the skin to tighten the skin through thermal effect. It is very practical for the parts with skin laxity, such as face, neck and abdomen. 3.Radiofrequency lipolysis: It mainly plays the second auxiliary role of ultrasonic lipolysis, and stimulates the subcutaneous layer of the skin through thermal effect to achieve the purpose of skin tightening. The latest radiofrequency device is equipped with a skin temperature detection device, which can cut off the heat source in time and effectively prevent damage to the skin. How to choose a liposuction surgeon: as a liposuction surgeon, generally need to have the following qualities: 1, sufficient physical strength and upper body strength: liposuction surgery itself is a physical exertion surgery, the physical quality of the operator himself has certain requirements, so the strength and physical strength of the male doctors taught to have a natural advantage in this surgery 2, rich surgical experience: liposuction surgery itself is not a high threshold for entry, but It is not easy to achieve good surgical results. Less experienced doctors are prone to localized unevenness, and in serious cases, even suck out the lunar surface-like shape, which is extremely difficult to repair. In addition, some doctors do not have a good understanding of the human body’s shape, resulting in poor overall shape after surgery. 3, enough patience: liposuction surgery is a kind of sculpture surgery, need to be carved. Strive to do every part of the form perfect, need to have a craftsman-like patience and dedication to the operator.