The utility model relates to a remote operation device for assembling and disassembling a grounding wire of a straight lead. The remote operation device is composed of a lead clamping device and a remote operating rod, wherein the remote operating rod is composed of a telescopic rod and a central limiting hole which is arranged at the top end of the telescopic rod and matched with the tail end part of a horizontal transmission rod, and the side wall of the central limiting hole is provided with a limiting groove. Adoption of the remote operation device can effectively avoid electric power accidents and need only one worker to complete operations while removing safety hazards. Meanwhile, the efficiency is increased greatly, and a misoperation phenomenon is reduced. When the grounding wire of the straight lead is assembled or disassembled by using a brake pull-rod, the brake pull-rod is required to be inclined to a certain angle with a ground wire end, and risks such that the ground wire end breaks away from the brake pull-rod and crashes an operator or a knife switch insulator are easy to occur. The special brake pull-rod provided by the utility model is connected with the ground wire end reliably, thereby shortening the operation time under the trend of advocating staff reduction and efficiency improvement.