To provide a material for repairing bone which lightens the patients' burden because it does not need the second operation needed by the former treatment method using a titanium frame and the neonatal bone from periphery tissue in the bone deficit part is repaired to the desire shape.

This material for repairing bone is constituted of a sponge body constituted of the intravital decomposable and absorbable material and the mesh constituted of the intravital decomposable and absorbable material which covered on the sponge.