PURPOSE: To decrease the strength dispersion of an obtained sintered body and thus increase the strength by supplying ceramic molding powder into a molding mold while dusting the powder uniformly in the peripheral direction and filling it therein by vibrating the molding mold.

CONSTITUTION: Molding powder 17 supplied in a funnel 15 drops into a rotating disc 18 and dispersed uniformly around a mandrel 11 through a centrifugal force and then inputted in a clearance 16 (in a mold). At the same time, an oscillator 14 attached beneath the fixing jig 12 of the mandrel 11 is actuated and thus the mandrel 11 is given a predetermined oscillation. In this manner, the ceramic molding powder 17 is supplied uniformly into the molding mold and simultaneously, since the mandrel 11 is given oscillation, the filling becomes fine.