Cable pay-off device

A cable pay-off device comprises a supporting unit used for supporting and fixing a cable tray and provided with a set of bases arranged oppositely; the upper end face of the base is provided with a groove used for containing the disc face of the cable disc. An adjusting assembly used for adjusting the height of the cable tray is arranged in the groove of each base, and the adjusting assemblies are synchronously controlled to adjust the height of the tray surface position used for supporting the cable tray; the fixing unit is used for fixing the supporting unit and carrying out cable fixing on a middle shaft of the cable reel, the fixing unit is provided with a connecting assembly and a cable locking assembly, the connecting assembly is used for adjusting the horizontal distance between the bases and connecting all the bases into a whole, the cable locking assembly is used for carrying out cable fixing on the cable reel, and the cable locking assembly is connected with the connecting assembly. The device is s