The focus of liposuction of buttocks is to reduce the circumference of buttocks, trim and lift up the loose and sagging part, narrow the width of the circumference of buttocks, adjust the height of the buttocks backward appropriately, reduce the fat of upper buttocks so that the curve from waist to buttocks is rounded and smooth, reduce the fat of the root of thighs so that the thighs appear graceful and slender, and deepen the groove of buttocks. 1, liposuction surgery is easy to destroy subcutaneous tissue: traditional liposuction surgery using high negative pressure liposuction, in addition to destroying fat cells, but also easy to destroy other subcutaneous tissue, the operation is more likely to bleed, easy to produce bruising; 2, fat embolism: liposuction surgery is the most dangerous complications are fat embolism and hemorrhage. Fat embolism is a large amount of fat into the blood vessels, into the human blood circulation, blocking the pulmonary artery, causing pulmonary embolism, which leads to respiratory difficulties, failure and death; 3, uneven liposuction will lead to uneven skin; 4, too much fat sucked out, easy to lead to bleeding, hematoma; 5, too little fat sucked out, will result in the buttocks is not obvious or not up to ideal If the operator does not operate properly during the operation, the nerves in the operation area may be damaged, resulting in sensory and motor dysfunction after the operation. It is recommended that patients should go to regular hospitals for surgery to avoid risks and get satisfactory treatment results.