Negative pressure liposuction is a popular body shaping method at present. Fan, a naval plastic surgery expert, pointed out that negative pressure liposuction has obvious weight loss effect. Through a small incision, the anesthetic is injected into the suction site. After the anesthetic takes effect, the suction head connected to the aspirator is inserted into the suction site to sequentially suck the adipose tissue. The diameter of the suction head is generally 3 ~ 4 mm, so the operation speed is very fast and the suction capacity is obviously increased. Because of less trauma, the patient rested 1 ~ 2 days after operation, and generally did not need to be hospitalized, leaving no obvious scar after operation.