The operation of alveolar cleft includes two parts: soft tissue fissure or fistula closure and bone tissue transplantation. As usual, the operation is divided into two stages, the soft tissue fissure is closed first, and then bone grafting is carried out. Its purpose is to restore the bone continuity of alveolar process and close the soft tissue cracks through bone grafting. The function of alveolar bone transplantation: to provide bone support for adjacent teeth and teeth without eruption, to close the fistula between the mouth and nose and alveolar cleft, to provide a stable maxillary dental arch, and to provide a stable bracket support lip and nasal floor, so as to restore the shape of dental arch and improve nasal deformity.