Jaw plastic surgery usually takes three months to be effective. Although maxillofacial plastic surgery is the most direct and effective way to change the face shape at present, it is not possible immediately after the operation. Because there will be a swelling period of the wound after operation, the change of facial width is not obvious from the appearance, and some will even be wider. This period usually lasts for about 3 months, and as the swelling subsides, the surgical effect will gradually appear.