Mandibular angle plastic surgery can restore the normal shape of mandibular angle by removing the protruding part of mandibular angle, and make the face become a beautiful oval or oval face. Although the operation is complicated, as long as the operation is carried out in a regular hospital as soon as possible, the operation risk is very small. Mandibular angle plastic surgery is to cut the inside of the mouth close to the mandibular angle, cut the facial skin and muscles from the inside of the mouth, separate the muscles from the periosteum, expose the bones that need to be cut, draw the osteotomy line according to the designed bone cutting amount, and cut the mandibular angle with a swing saw with a long handle according to the osteotomy line. Generally speaking, the range of 3 ~ 4 cm in length and 1 ~ 2 cm in height can be cut off by arc, and then the edges and corners after osteotomy can be smoothed. Because the mandibular angle plastic surgery is performed under anesthesia, the patient has no pain, which is not as terrible as everyone thinks. Maxillary angle plastic surgery needs to make an incision in the mouth, so it will swell afterwards, so it needs a long recovery period. Everyone should be prepared. However, if the surgeon is inexperienced and causes damage to periosteum or muscle during the operation, it may cause pain.