The invention discloses a cable traction device for power construction. The cable traction device comprises traction device body composed of a traction mechanism and an elevation mechanism, the elevation mechanism is composed of a pedestal, a slide rail and first and second poles, the bottom of the pedestal is rotationally connected with rollers. A worm gear and a worm are arranged, a motor can provide power for a driving wheel, so that the traction device works smoothly with relatively low impact force, vibration and noise in the working process, and the service life of the traction device isimproved; driving and driven wheels are arranged and are used to draw cable via extruded rolling, the working efficiency is higher, use is more convenient, and the problem of low working efficiency of a present traction device is solved; and the elevation mechanism is arranged, so that the traction device can adjust the height randomly, and the traction device is more flexible and much more practical.