The invention relates to a preparation for restoring bone in the body of humans or animals in connection with an existing structure, a bone implant or some other prosthetic construction, as well as a method for restoring bone. The bone restoring preparation consists of an easily handleable and controllable preparation (composition) of resorbable calcium phosphate granules and a carrier of a biopolymer or lipid type. The preparation is intended to be applied in the position where the bone needs to be replaced, reinforced or built up, especially in connection with a bone implant or some other prosthetic construction where there is a lack of sufficient bone volume, or where the quality of the bone is too poor to allow a load-carrying function, for example permanent fixing of an implant.