Early correction of anterior dentures has the following characteristics: 1, long course of treatment: usually the correction of anterior dentures requires a long process, patients and parents should be psychologically prepared; 2, high recurrence rate: due to the complexity of the growth and development of An’s three types of malocclusion personality, so that the recurrence of anterior dentures after correction is difficult to predict, even after a long-term correction process, still had to choose orthognathic surgery to correct the deformity of the jaws. Despite this, early treatment is needed for the following reasons 1. early elimination of occlusal trauma to avoid psychological burden on the patient due to long-term anterior retrusion. 2, At the same time, through early growth reshaping treatment of bony three types of malocclusion, the patient’s growth potential is utilized to promote the growth of the maxilla and inhibit the growth of the mandible to treat mild jaw deformity or reduce the development of jaw deformity. 3, after the growth spurt and growth spurt, the mandible still has a large growth potential, while the significant change in the vertical direction of the face after the growth spurt is not conducive to the correction of An’s three types of malocclusion, so the maintenance and long-term stability after the completion of the correction is very important. 4, many cases show that even if the recurrence of anterior conjunction occurs after early correction, the degree of maxillary and mandibular disproportion is lighter than that of individuals with long-term untreated anterior conjunction deformity in terms of the overall condition of growth and development, thus further proving that early correction creates favorable conditions for comprehensive treatment and even adult orthognathic surgery.