The utility model relates to an electric power system shock -absorption, concretely relates to power supply bumper shock absorber, including holder and tup, the holder both ends are equipped with the fastener respectively, and the fastener fastens through the bolt, and the lower extreme of fastener is equipped with the connecting piece, and the connecting piece middle part is equipped with the through -hole, the inside steel strand wires that are fixed with of through -hole, and the steel strand wires tip is equipped with sound generating mechanism, is equipped with adjustable runner on the steel strand wires line body, and the regulating part is equipped with to adjustable runner outside, and the tup is being fixed to the regulating part lower extreme, the utility model discloses simple structure can adapt to different electric wires, can install a plurality of tups, and the position of tup can be adjusted at certain within range, and the shock attenuation is respond well, and the fastener can play the effect of protection electric wire, prevents that the electric wire from being destroyed, in addition, still has certain bird function of driving, has strengthened the guard action to the electric wire.