Mandibular plastic surgery is suitable for people: 1. Mandibular plastic surgery is suitable for patients with obvious hypertrophy, ectropion and entropion of mandibular angle and "Chinese face" or "trapezoidal face". 2. Mandibular plastic surgery is suitable for mandibular angle protrusion and bilateral asymmetry. 3. Mandibular plastic surgery is suitable for the situation that the ratio of upper and lower width of the face is not harmonious and the distance between mandibular angles is wide. Usually it will work normally in about half a month.