A method for producing a bone regeneration material containing an octacalcium phosphate-gelatin complex, the method including: co-precipitating octacalcium phosphate with gelatin to produce an octacalcium phosphate-gelatin co-precipitate washing the co-precipitate with a washing liquid to remove gelatin from the co-precipitate, thereby obtaining an octacalcium phosphate slurry dispersing the octacalcium phosphate slurry or dry granules formed using the slurry in an aqueous gelatin solution and drying the dispersion of octacalcium phosphate dispersed in the aqueous gelatin solution to produce an octacalcium phosphate-gelatin complex.
