Abstract: A method for producing calcium phosphate by the present invention is characterized by comprising the steps of: (a) preparing a 0.5-1.5 M aqueous calcium salt solution, a 0.3-0.8 M aqueous phosphate solution, and a 0.1-0.5 M aqueous carbonate solution; (b) mixing the aqueous phosphate solution and the aqueous carbonate solution in step (a) to prepare a mixture solution; (c) adding an aqueous alkaline solution to the aqueous calcium salt solution in step (a); (d) adding an aqueous alkaline solution to the mixture solution in step (b); (e) mixing and reacting the aqueous calcium salt solution with the aqueous alkaline solution added thereto in step (c) and the mixture solution with the aqueous alkaline solution added thereto in step (d) to prepare a precipitate; and (f) filtering, washing, and drying the precipitate in step (e) to obtain calcium phosphate, wherein the primary particle size of the calcium phosphate is 100 nm or smaller and the specific surface area thereof is 40-150 m2/g.