An implant for bone-graft insertedly placed in a procedure pore, the implant includes a bone organism having a lump shape, and a protective film coated to cover an overall outer surface of the bone organism, the protective film which is an absorbent membrane absorbent into a body part as time passes to be eliminated. The implant for the bone-graft may be applied to diverse procedures performed for hone-graft not only in a dental surgery but also in orthopedics or a plastic surgery.