The invention provides a novel paying-off device of a copper wire drawing machine. The novel paying-off device of the copper wire drawing machine comprises a paying-off part, a paying-off disc and an inertia adjusting part, a rotating table is arranged on the bottom end of the paying-off part, a rotating shaft is arranged in the center of the rotating table, a supporting plate is arranged on the lower portion of the rotating shaft, a wire passing through-hole is formed in the supporting plate, a guiding mechanism is vertically and downward arranged on one side, far away from the rotating shaft, of the supporting plate, a swinging air cylinder is hinged to the rotating shaft, a wire outlet wheel is hinged to the top end of the swinging air cylinder, the other wire passing through-hole is formed in the rotating shaft and the wire passing through-hole is formed between the supporting plate and the swinging air cylinder, the paying-off disc is arranged on the upper portion of the rotating shaft, a wire outlet end of the paying-off disc is arranged to be led out by the wire outlet wheel, the inertia adjusting part is arranged to be composed of a rotating speed detection sensor and an inertia adjusting mechanism, wherein the rotating speed detection sensor is arranged on the rotating table, and the inertia adjusting mechanism is arranged on the lower surface of the rotating table. According to the paying-off device of the copper wire drawing machine, copper wires can be prevented from being in contact with the edge of paying-off disc, the tension of the cooper wire can be adjusted, and the influence caused by inertia can be reduced.