The invention discloses a copper wire pay-off device capable of quickly replacing a wire barrel, which comprises an annular slide rail, a gap, an inlet track, a wire barrel, a turntable, a lever, a first support rod, a horizontal bar, and a first wire passing collar , the second pole and the second wire passing collar, the annular slide rail is provided with a plurality of wire barrels, the edge of the annular slide rail is provided with a gap, the gap is provided with an inlet track, and the annular slide rail A turntable is arranged in the center of the rail, and a first vertical support rod is arranged on the turntable, at least one cross bar is arranged at the top of the first support rod, and first wire passing collars are provided at both ends of the cross bar , the side wall of the first pole is provided with at least one driving rod, the length of the driving rod is greater than the radius of the circular slide rail, and the top of the edge of the line barrel is provided with a vertical second pole, the second The top of the pole is provided with a second wire passing collar. The invention has the advantages of simple structure, convenient use, fast pay-off speed, smooth pay-off and convenient replacement of the wire barrel.