Children’s circumcision is a kind of malocclusion, when biting the lower jaw in front of the upper jaw, according to the age and their own situation to determine the length of time to correct. Breast teeth as well as replacement teeth of the anti-mandibular children, due to the age of small, rapid development, at this time the effect of correction is better, this stage is generally due to dental and functional reasons, the degree is relatively light, the correction method is also simple, you can use movable orthodontic appliances, functional orthodontic appliances, etc., in the cooperation of the child, generally within 1 year can be completed. If the permanent teeth, jaws and teeth are well developed, different corrective programs should be determined according to their own conditions. If it is dental, it can be treated by orthodontic methods, usually within 2 years, while the serious circumcision requires orthodontic-orthognathic combined treatment, which should be carried out after 18 years of age, and the time is usually more than 2 years. It is recommended that the children with the circumcision should go to the hospital in time for examination to identify the cause of the disease and cooperate with the treatment.