According to your description, this is the first branchial arch syndrome. Generally, patients have different degrees of appendage and mandibular hypoplasia, and some have transverse facial fissure. With the development and growth, the deformity of children's cheeks and mandible will become more and more obvious, and the bones and soft tissues are not as good as the healthy side. Because the patient's mandibular developmental disorder will restrict the development of the ipsilateral maxilla, let the child bite a chopstick horizontally and see the connection with the double pupils to roughly know the degree of maxillary developmental disorder (normal people should be parallel to each other); The asymmetry of mandibular development will gradually skew the chin, and at the same time, due to the lack of bone mass in the mandible, the teeth are arranged in disorder. . . At present, the main treatment is staged surgery. Firstly, distraction osteogenesis can be performed on the mandible, and the short and undeveloped mandible can be stretched by 1mm every day, which can correct the deformity of one mandible, relieve the limitation of maxillary development and provide enough space for the eruption of teeth. A small mandible will narrow the upper respiratory tract, which will cause sleep-disordered breathing, affect children's growth and intellectual development, and lead to poor academic performance such as hyperactivity and difficulty in concentration. When the children's first and second permanent molars erupt, they can receive orthodontic treatment, correct their teeth and stimulate the growth of the affected mandible with strength. Because the developmental ability of one side of mandible is worse than that of the healthy side, although orthodontic treatment has been carried out, there may still be maxillofacial asymmetry deformity in the late adolescence and adulthood, and orthognathic surgery and soft tissue repair of the corresponding face are needed to correct the deformity. This disease is very common in our hospital. Through treatment, the patient's appearance will be significantly improved, but the operation may be risky and leave scars. Cost estimation (according to the current standard): a mandibular traction operation needs 30,000-60,000 yuan (depending on which distractor is used and how many), and orthodontic treatment takes about 2-4 years, and the cost is about 20,000 yuan; Orthognathic surgery costs 30-80 thousand.