Generally speaking, the best time to correct a child’s geodesic problem is between the ages of 3 and 4. The exact timing of the orthodontic treatment needs to be determined based on the actual condition of the patient, and cannot be generalized. The ground is a more common phenomenon of tooth and jaw retrusion. In some cases, the developmental deformity is so severe that it may even affect the normal bite function of the mouth. It can be divided into two major types according to the period of development, namely, the milk period and the permanent period. For children who develop diastema during the milking period, it is recommended that they undergo standardized orthodontic treatment between the ages of 3 and 4. At this stage, the child’s compliance is relatively high, and the roots of the baby teeth are still in the anagenesis phase, which is more plastic and thus more conducive to orthodontic treatment. For children who have entered the permanent phase, orthodontic treatment can be performed between the ages of 12 and 14. At this stage, the patient’s root development is basically stabilized, and the patient’s root development can be observed through standard intraoral films, and a suitable orthodontic plan can be better developed. Once children have received orthodontic treatment, they should pay attention to the cleaning care of the aligners and brush their teeth gently and carefully to prevent the occurrence of dental caries or other oral diseases.