Chin liposuction refers to the removal of subcutaneous fat from the jaw fat pockets through a tiny skin incision and then using negative pressure by swelling liposuction to sculpt and beautify the body shape. However, it has certain surgical risks, mainly the following: 1. Infection: Since liposuction is an invasive operation with a corresponding needle inserted into the fat layer of the chin, it may bring bacteria or viruses into the subcutis, which may cause local infection; 2. Local skin necrosis of the chin: Since liposuction is a delicate operation, but it will inevitably damage some nerves and blood vessels, which may cause vascular blood supply Local skin necrosis: Because liposuction is not very even, some places have more fat and some places have less fat, which may cause local skin unevenness and occasional unevenness; 4. Hardness: After normal liposuction, there will be different degrees of local hardness after surgery, mainly due to the transfer of capillaries after liposuction and the formation of fibrous tissues when the skin adheres to the muscles and loses elasticity, thus hardening. Therefore, when liposuction is performed on the chin, a certain thickness of subcutaneous fat should be left, generally a 0.5cm thick fat layer should be left in this area, so that the local area will not become hard after the operation; 6, facial nerve injury and difficulty in cheek puffing due to drooping corners of the mouth: it is mainly due to the damage to the cervical branch of the facial nerve or the mandibular margin branch caused by excessive liposuction.