To provide a crusher which prevents lowering of crushing efficiency caused with the development of crushing work.

The crusher includes: a crushing device 13 for crushing a material X to be crushed; a conveyor 12 for transporting the material X to the crushing device 13; and a press roller device 14 for pressing the material X on the transporting conveyor 12 by the press roller 24 and supplying the material X to the crushing device 13 by interlocking with the conveyor 12. The press roller 24 includes a plurality of pawl members 42 with tips protruding radially outward direction of the press roller 24. Each tip of the plurality of pawl members 42 can oscillate in the direction of axis of the press roller 24.