The effect of Chinese character face plastic surgery is natural and can't be seen. Chinese character face is caused by hypertrophy and eversion of mandibular angle, which can be improved by grinding mandibular angle. Intravenous anesthesia is used in mandibular angle grinding, and the most suitable incision method is selected according to the situation. The operation is quick, safe, minimally invasive, with smooth mandibular angle and natural face after operation, which is the first choice to improve the Chinese character face.