The invention discloses an electric type mobile take-up and pay-off trolley for cable reels. The electric type mobile take-up and pay-off trolley comprises a frame, wherein the frame comprises a traction frame and support beams, the support beams are located on the left side and the right side of the front end of the traction frame and extend forwards, wheels are mounted at the bottoms of the twosupport beams respectively, a steering wheel is arranged in the middle of the rear end of the traction frame, and a steering handle controlling the steering wheel to swing is further arranged on the traction frame; two guide columns arranged at an interval front and back are vertically mounted at the top of the left support beam and the right support beam, lifting seats capable of sliding up and down are glidingly connected between the two guide columns on the left side and the right side respectively, multiple support holes which are arranged at intervals vertically and are through left and right are formed in the two lifting seats, one supporting shaft is inserted into every two support holes with the same height, and telescopic oil cylinders capable of driving the lifting seats to moveup and down are mounted on the support beams below the two lifting seats. The trolley is simple in structure, convenient to use and high in bearing capacity and can transport the cable reels rapidly and stably.