Windproof stay wire cross-arm device for power transmission line

Provided is a windproof stay wire cross-arm device for a power transmission line. Windproof stay wires (2) are connected below pendent strings (1), and a windproof cross-arm (3) is connected below the windproof stay wires (2). The tower is provided with the windproof cross-arm and stay wire device with a simple structure, the probability of windage yaw accidents is reduced, the safe operation level of the power transmission line is improved, the electric energy loss is reduced, the device is easy to manufacture, install and maintain, and the device is also advantaged by beautiful appearance, good solidity and durability, high applicability, and economy and convenience.