Rotary disc for cable pay-off and cable laying device

The utility model relates to the technical field of pay-off reels, in particular to a rotating disc for cable pay-off and a cable laying device, and aims to solve the problems that in the prior art, due to the fact that a simple assembly support is used for pay-off, a wire coil is prone to falling off, potential safety hazards exist, and laying efficiency is low due to the fact that resistance is large in the pay-off process. The utility model provides a rotating disc for cable pay-off. The rotating disc comprises an upper disc, a lower disc, a central shaft, a first bearing and a universal trundle assembly. A shaft sleeve is arranged at the top of the upper disc and used for being inserted into a wire coil. The upper disc can rotate relative to the lower disc; the universal trundle assembly is arranged between the upper disc and the lower disc and is provided with a first wheel, a second wheel, a connecting plate, a second bearing and a first connecting shaft; the first wheel can rotate relative to the upper