Provided are a hard tissue restoration material, which is excellent in hard tissue restoration ability, extremely effective in promoting recalcification of dental enamel, and excellent in protection properties and aesthetic properties, and a hard tissue restoration method. The hard tissue restoration material according to the present invention is a biocompatible ceramic film with flexibility and pliability that is obtained, for example, by immersing a substrate, having the biocompatible ceramic film formed thereon, in a solvent, which does not dissolve the biocompatible ceramic but dissolves at least a portion of the substrate, to dissolve or separate the substrate. Also, with the hard tissue restoration method according to the present invention, the hard tissue restoration material according to the present invention is bonded to or wound around a hard tissue defect site.