The invention relates to a bird repelling device for power equipment. The bird repelling device comprises a wing-shaped screw, a mounting base and a bird repelling device body, wherein the bird repelling device body comprises a vertical column, a connecting column, a bird repelling mechanism arranged on the vertical column and a wind cup lifting mechanism arranged on the connecting column. The bird repelling device has the advantages that the bird repelling mechanism and the vertical column are fixedly connected in a plug pin mode, mounting is convenient, meanwhile, in the transportation process, the bird repelling mechanism and the vertical column can be detached, then in the mounting and transportation process, the occupied space can be reduced, and transportation is convenient; besides,the wind cup lifting mechanism adopts a telescopic wind cup, and when typhoon, storm and sudden weather change or transportation occurs, the wind cup can be contracted to get close to the connectingcolumn and descend to the vertical column through the lifting device; and after the typhoon and storm or during normal using, the lifting device lifts the wind cup to the high altitude again, the windcup is unfolded, and therefore transportation is facilitated, and the wind cup has the high function of resisting severe weather environments such as typhoon and storm.