The utility model relates to the technical field of insulating fixtures. The utility model further discloses a wiring device for the power distribution line. U-shaped mounting plate, a mounting bearing seat is fixedly connected to the inner surface of the left side of the mounting U-shaped plate; and a threaded rod is fixedly connected to the inner surface of the right side of the mounting bearingseat, the right end of the threaded rod penetrates through the mounting U-shaped plate and is fixedly connected with a control handle, a limiting block is fixedly connected to the outer surface of the threaded rod, and two symmetrical threaded blocks located on the two sides of the limiting block are in threaded connection with the outer surface of the threaded rod. The utility model discloses awiring device for a distribution line. by arranging the control handle, the effect of pulling the threaded rod to rotate is achieved; the guide grooves and the guide rods are arranged to achieve the effect that the two threaded blocks get close to each other under the limiting effect when the threaded rods rotate, then the effect of improving the wiring fixing operation efficiency is achieved by operating the fixing structures on the two sides in the single direction at the same time, and therefore the effect of shortening the wiring operation time is achieved.