The invention discloses a scaffold material applied to vertebral fusion, belonging to the technical field of preparation of a medical material for department of orthopedics. In order to solve a clinical problem of osteolysis caused by rhBMP2, the scaffold material is doped with a strontium element in porous cancellous bone and is attached with an rhBMP2 composite material. On the basis of the principle that the strontium element is subject to similar substitution with calcium element in the porous cancellous bone, the porous scaffold, by doping the strontium element in the porous cancellous bone and by permeating, adsorbing and freeze-drying rhBMP2 molecules in the porous cancellous bone through affinity of the rhBMP2 with bone collagen, can develop an effect of bone conduction, and meanwhile the porous scaffold can achieve continuous simultaneous release of the rhBMP2 molecules and strontium ions within a local region of vertebral fusion; and freeze-dried bone doped with the strontium is stronger in capacity of adsorbing the rhBMP2 molecules.