Disclosed is a material having a higher and direct bone-inducing ability, which is made of a calcified substance produced by a cell. Specifically disclosed is a material for regenerating a bone tissue, which comprises a calcified substance extracted from a cultured cell expressing a calcification capacity. In the material, the cultured cell expressing a calcification capacity may be a mammalian cell. In the material, the calcified substance may be extracted without sintering at a high temperature. Also disclosed is an artificial bone containing the material.