The utility model provides an auxiliary device convenient to tethers, relate to electric wire netting auxiliary assembly technical field, include fixing sleeve through rotary regulating mechanism, adjust the pole, regulating wheel and roating seat, the top of roating seat is rotated with telescopic support rod through the round pin axle and is connected, it is connected through round pin axle and one side rotation of rotating the seat to adjust the one end of pole, adjust other end back -and -forth movement in fixing sleeve of pole, the regulating wheel meshes with the regulation tooth of adjusting on the pole, the regulating wheel is established on telescopic support rod, fixing sleeve is fixed to be established in telescopic support rod, the one end and the weight balancing ball fixed connection of stay cord, the other end passes in proper order and articulates elbow and telescopic support rod, and the body of wearing out telescopic support rod is connected with the admission machine structure, realize the adjustment regulating wheel and realized articulating the angular adjustment of elbow, and the operating head is dismantled, the convenient change, operate more convenient high efficiency, it is safe more practical, reasonable in design, compact structure.