Obesity is due to excessive fat accumulation, and liposuction is gradually accepted as a relatively less risky and quick-acting method. The operation method is mainly divided into the following three steps: the first step is anesthesia. Most liposuction operations are general anesthesia, and patients can operate after falling asleep; Step 2: Insert a metal straw into the fat layer at the liposuction site, and connect a negative pressure suction machine behind the straw to gradually suck out the fat with negative pressure suction, with a maximum of 3000ml of fat at a time. If it is sucked out too much, it will easily lead to local skin depression and increase the risk of fat embolism; The third step is to get dressed. It is best to wear a corset after liposuction, which is beneficial to the rapid healing of liposuction parts and full hemostasis.