The plate-making apparatus according to an aspect of the present invention includes an exposure head which engraves a surface of a plate material by emitting a light beam toward the plate material; a scanning device which performs exposure scanning by relatively moving the plate material and the exposure head; a correction profile generation device which generates a correction profile for correcting an emission amount of the light beam emitted by the exposure head according to a characteristic difference of the plate material; and an exposure control device which, when a correction profile for a plate material to be used is generated by the correction profile generation device, uses the correction profile for the plate material to be used to control the emission amount of the light beam.