Power construction cable pay-off support

A power construction cable pay-off support comprises a first base and a second base which are arranged in a left-right spaced mode. The first base comprises two first side plates, the two first side plates are arranged in a front-back spaced mode, the left sides of the two first side plates are connected, a mounting plate is arranged in the middles of the two first side plates, a jack is arranged on the right side of the mounting plate and connected with a first shaft through a U-shaped support, and guide grooves are formed in the positions, corresponding to the first shaft, of the two first side plates. The two ends of the first shaft penetrate through the guide grooves, the middle of the first shaft is sleeved with a first pulley, and a plurality of first through holes are formed in the positions, close to the right ends, of the two first side plates. The second base comprises two second side plates, the right sides of the two second side plates are connected, a second shaft is arranged in the middles of th