Abstract: A method of preparing an inorganic binder for medical use according to an embodiment of the present disclosure includes preparing a starting material using a-TCP powder and phosphate powder each of which has a predetermined particle size, producing a paste having a predetermined viscosity that is suitable for formation of a molded article having a predetermined shape by homogeneously mixing the starting material, adding water or saline to the homogeneously mixed starting material, and kneading the resulting mixture, subjecting the molded article to hydration reaction, and washing and drying the molded article having undergone the hydration reaction to obtain an inorganic binder containing OCP and HA crystal phases.

Abstract: The present invention relates to a method of quickly preparing a large amount of octacalcium phosphate and octacalcium phosphate prepared thereby. A method of preparing octacalcium phosphate according to an embodiment of the present invention includes preparing a calcium phosphate solution, controlling an initial pH by controlling a pH of the calcium phosphate solution to a range from 5 to 6 using an acidic solution at a time point at which the pH of the calcium phosphate solution increases, heating the calcium phosphate solution to a temperature ranging from 60° C. to 90° C., and controlling a terminal pH by controlling the pH of the calcium phosphate solution to a range from 5 to 6 using a basic solution at a time point at which the pH of the heated calcium phosphate solution decreases.