A method for producing a large sized inorganic calcined substance with good properties using dry press-molding or semi-dry press-molding. The method uses a press machine having an upper plate, a lower plate, and a frame portion, and includes the following steps: a first step of positioning a raw material mixture for forming a rear surface layer or a front surface layer over the lower plate, a second step of positioning a raw material mixture for forming a core layer over the raw material mixture of the first step, a third step of positioning a raw material mixture for forming a front surface layer or a rear surface layer over the raw material mixture of the second step to form a stack of three layers of raw material mixture, and press-molding the stacked three layers of raw material mixture to form a press-molded article using the lower plate and the upper plate.