Abstract: A granulator for finely granulating pressurized raw material comprises a cylindrical body provided with an inlet and an outlet, at least two plates superposed on each other such that the plates are flush with the cylindrical body and assembled into the cylindrical body such that mutual relative positional relation is maintained, each of the plates comprises a large number of through holes and a large number of grooves for connecting the through holes to one another on each of the superposed faces of the plates, and the grooves in one of the plates intersect with the grooves in the other plate on the superposed faces at a large number of positions in a state in which the plates are superposed on each other.