A hydraulic crusher includes crushing arms, a crusher body having a hollow portion extending in the longitudinal direction, and hydraulic cylinders. The hydraulic crusher includes four first hydraulic hoses which have proximal caps connected to ports of the crusher body and extend toward the distal side in the longitudinal direction in the hollow portion; four second hydraulic hoses which have proximal caps connected to ports of the hydraulic cylinders, and extend into the hollow portion and then toward the distal side in the longitudinal direction while being curved; and a clamp or the like serving as a joint member movable in the longitudinal direction, the clamp connecting distal sections of the first hydraulic hoses with distal sections of the second hydraulic hoses.