The utility model discloses a windproof complete set of pole-mounted device for a distribution network, which is characterized in that two struts are vertically and symmetrically arranged on a cross arm, and the struts are fixed on an electric pole through hoops, so that the cross arm and the struts are fixed to form a triangular fixing structure, and the stable connection of the cross arm is realized; an external thread at the free end of the insulating rod of the insulator I is meshed with an internal thread at the top of the pole; the supporting iron of the first insulator is arranged at the top of the electric pole in a sleeving mode, the top of the electric pole is fastened through a hoop, an external thread at the free end of an insulating rod of the second insulator is meshed with an internal thread arranged on the cross arm, and the supporting iron of the second insulator is tightly attached to the side face of the cross arm and fixed to the free end of the second insulator through a fastener. Compared with the prior art, the scheme is simple in structure, the cross arm can be firmly fixed on an electric pole, the insulators are connected in a threaded meshing mode and connected through the supporting iron, loosening and inclining of the insulators are eradicated, line grounding short circuit tripping is avoided to the maximum extent, and the operation safety of a powersupply line is improved.