Provided are a pulverizer that enables to uniformly pulverize a pulp sheet in the axial direction of a rotary shaft, an absorber manufacturing apparatus provided with the same, and a pulp sheet pulverizing method. A plurality of cutter plates (9) are disposed away from each other at an interval in the axial direction of a rotary shaft (8). Each of the cutter plates (9) includes a plurality of pulverizing blades (9b) aligned circumferentially along the outer periphery edge of the cutter plate. At least one of the cutter plates (9) is fixed to the rotary shaft (8) in a state that the cutter plate is inclined with respect to a direction orthogonal to the rotary shaft (8).
