The treatment of children’s tooth loss is as follows: 1, use running water to rinse the detached tooth, remove the bacteria and pollutants attached to the root surface, pay attention to not use instruments to scrape, to prevent damage to periodontal fibers, etc. 2, use saline to rinse the alveolar fossa, remove clots, etc., under local anesthesia, according to the occlusal relationship of the tooth is reset, the use of steel wire will be ligated to fix the tooth on the two sides of the neighboring teeth, properly adjusted to reduce the occlusal contact, avoid gnawing hard objects. Reduce occlusal contact and avoid chewing hard objects.3. Perform root canal treatment on the affected tooth to prevent periapical infection caused by pulp necrosis, which may lead to reimplantation failure.4. Follow up once a week to observe the healing of the tooth root and the surrounding bone, and then remove the arch splints after the tooth is restored to solidity in 2-3 months.