Mandibular osteoplasty is generally performed by general anesthesia with tracheal intubation, outside the innermost molar of the mouth, incising the mucosa to reach the periosteum of the mandibular region, separating the appropriate area and fully exposing it, then removing the appropriate part of the mandibular bone with a rocking saw, then grinding and stopping the bleeding, restoring the periosteum with sutures, and then suturing the mucosa. So, which groups of people are suitable for mandibular osteoplasty? Should be jawbone plastic crowd: 1, jawbone plastic adapted to the jaw angle protrusion, asymmetry on both sides. 2, mandibular reshaping adapted to the upper and lower facial width ratio is not coordinated, the two jaw angle spacing is too wide. 3, jawbone plastic adapt to the jaw angle is obviously hypertrophic, outward and inward type, face shape for the “national face” or “trapezoidal face”.