Liposuction belongs to the surgical method of plastic and cosmetic surgery body contouring, which draws out fat from the deep part of the body through negative pressure attraction. Tummy tuck may cause some harm to the body, as follows: 1, subcutaneous hard knots: bruising, edema, skin numbness, subcutaneous hard knots and other symptoms will occur after whole body liposuction, subcutaneous hard knots are caused by inflammatory nodules or fat liquefaction caused by damaged subcutaneous tissues; 2, skin depression: the liposuction apparatus used is too rough, plus the fat stored under the skin is less, the pressure control is uneven during liposuction, if 3, rebound: there are many different fat layers in the body, liposuction will generally retain 0.5-1cm of shallow fat, in the continuous recovery process, if there is excess fat, the body will still absorb fat from other parts, resulting in rebound; 4, subcutaneous bruising: in general, subcutaneous bruising will occur after liposuction, but it will gradually disappear with time; 5, dizziness, subcutaneous bruising: in general, there will be subcutaneous bruising, but it will gradually disappear with time. 5. Dizziness and nausea: If fever, local redness, dizziness, nausea and fainting occur one week after surgery, it may be due to wound infection, which requires timely medical treatment. Liposuction surgery has certain surgical risks, so it is recommended that the majority of candidates must choose a regular hospital and have this surgery performed by a skilled surgeon, and have good communication with the surgeon before the surgery to understand the indications for the surgery and the safety during the surgery.