Obesity is determined by the size and amount of fat, and the amount of fat in adulthood is certain. Different from other liposuction methods to reduce the volume of fat cells, hydraulic liposuction aims to lose weight by reducing the amount of fat in the human body and expelling a small amount of fat cells from the body. Lido plastic surgery experts said that because human fat has no function of regeneration and replication, it can greatly reduce the rebound probability after losing weight. In addition, because the amount of fat that should be extracted is calculated according to the amount of fat extracted during surgery, there will be no local unevenness caused by too much or too little fat extracted. The hydraulic liposuction instrument adopts the hydraulic liposuction (WAL) technology, which is safe and reliable by accurately acting on the target tissue and selectively separating fat cells through the annular pressurized water flow of spiral water jet.