The chin is what we usually call the chin, located in the lower part of the face, accounting for about 1/6 of the face. A short chin will make the whole face look round and lacking in dimension. A chin with a certain height and length can make the face look more slender, with a sharp outline and a more perfect face shape. At present, chin augmentation surgery can be broadly divided into three categories, according to the patient’s aesthetic and their own conditions, you can choose a personalized approach to suit their own program. 1, injection chin augmentation 1, hyaluronic acid injection, the advantage is pain, small damage, the exact effect. After the local external anesthetic, you can operate, no need for any care after surgery, no marks, no trauma. It is determined that the hyaluronic acid will be absorbed in about six months and needs to be injected again. A very small number of patients will make local mechanization and hardening due to multiple injections. 2, autologous fat injection, the advantage is that the fat tissue is its own tissue, and the effect can be permanently maintained after survival. It is determined that most of the fat will be absorbed with each fat injection, which requires multiple injections and requires fat aspiration in the legs or abdomen. Second, chin augmentation by prosthesis According to the patient’s needs, the prosthesis is sculpted and implanted under the periosteum, which can be formed in one time. The incision is located in the mouth and there is no scar after surgery. Commonly used prosthesis: Medpor, silicone, expanded 1, Medpor, is a polymer artificial bone, more expensive, because it needs to be fixed, the requirements for the surgeon are higher, the best postoperative effect, because it can fit closely with the bone surface, shaping a more accurate curvature, convexity, and will not be displaced, the effect is permanent. With the improvement of economic conditions, as well as the aesthetic requirements of patients, the use of Medpor in chin augmentation is increasing. 2, silicone, tumescent, etc., are commonly used chin augmentation prosthesis, sculpture, plasticity is relatively easy, it will be implanted in the peeled cavity that completes the surgery, the effect is more accurate. However, due to the lack of strong fixation, there will be bone compression and absorption phenomenon in the long term, the possibility of displacement. 3.Osteotomy is suitable for patients with more serious chin shortening, requiring hospitalization. The surgery is mainly to shift the receding chin upward and downward to correct the short deformity, the surgical effect is exact, the surgery needs to be completed by professional and skilled craniomaxillofacial surgeons, the surgical risk is small.