The crush can 4 is provided therein with the ribs 46 and 47 extending in the vehicle front and rear direction. The bumper beam 6 is provided therein with the ribs 66 and 67 extending in the vehicle front and rear direction. The rib 46 of the crush can 4 and the rib 66 of the bumper beam 6 are disposed at approximately the same height, and the rib 47 of the crush can 4 and the rib 67 of the bumper beam 6 are disposed at approximately the same height.