The invention discloses a power cable laying device, comprising a base and a driving motor. A first support plate is fixedly installed on the top of the base, and a mounting plate is fixedly installed on one side wall of the first support plate. The motor is fixedly mounted on the mounting plate, and the mounting plate is provided with a through opening. The present invention uses the base, the drive motor, the first support plate, the installation plate, the through hole, the rotating shaft, the notch, the first threaded rod, the push block, the sliding groove, the second threaded rod, the sliding block and the supporting mechanism. , the cable take-up wheel is moved to the rotating shaft by pushing the cable take-up wheel to the bearing plate, and then the first threaded rod and the second threaded rod are driven to rotate by the driving motor, and the multiple support blocks are pushed through the push block at the same time. The block movement can realize the purpose of supporting the cable take-up wheel through the plurality of second support plates, so that the erection purpose of the cable take-up wheel can be realized, and a lot of manpower can be saved.