The common liposuction methods are tumescent negative pressure liposuction, ultrasonic liposuction, electronic liposuction, laser liposuction and hydrodynamic liposuction. The tumescent negative pressure liposuction method has the advantages of less bleeding, easy mastery, large suction, safety and reliability. It is one of the main liposuction methods at present. Mainly suitable for abdomen, thighs and other parts with high suction.