The present invention discloses an alveolar bone graft, a processing method thereof, and a method of treatment using the same. The processing method of the present invention comprises the steps of: (a) separating the tooth gathered from a patient into a crown and a root (b) removing soft tissues and enamels within neurons of the crown and the root (c) washing the crown and the root taken in step (b) (d) forming a number of holes in the washed crown and the root (e) dewatering, degreasing and decalcifying the crown and the root having a number of holes and (f) freeze-drying the crown and the root. The present invention allows the safety of an implant operation to be improved and a metastasis of infectious diseases of allograft, xeno (animal) graft to be prevented by using the patients own tooth. Also, the present invention allows an autogenous bone graft to be possible without additional operations.