Children’s orthodontic treatment is appropriate at the age of 6. Generally, children’s permanent teeth come out around 6 years old, and orthodontic treatment can only be performed after the teeth have come out. If the child’s teeth are seriously stunted, it is recommended that orthodontic treatment as soon as possible to prevent future dental bone dysplasia, making orthodontic treatment more difficult. Orthodontic methods specifically the following: 1, movable aligners: this method is commonly used in the period of milk teeth and teeth replacement period is relatively simple correction of malocclusion, or with fixed orthodontic appliances for correction. Early correction is conducive to the development of the upper jaw and the prevention of permanent teeth retrusion. If children have bad habits such as lip biting, tongue extension, etc., this method can be applied to correct and prevent the occurrence of malocclusion; 2, functional orthodontic appliances: this method is used for children in the period of teeth replacement or just after the replacement of teeth in the growth spurt, can correct bony malocclusion; 3, orthognathic surgery: for serious dental and maxillofacial deformities, relying solely on orthodontics can not be resolved, the need for combined surgical and orthodontic orthodontic treatment method of treatment. At the same time, children should develop good oral care habits and brush their teeth on time, at least 1-2 times a day to prevent the occurrence of dental caries after choosing the appropriate orthodontic methods.