A conductive winding structure, the fabricating method thereof, and the magnetic device having the same. The method for fabricating the conductive winding structure includes: (a) providing a mold with a plurality of extension portions and a plurality of protrusions, the plurality of extension portions are connected to each other as a continuous spiral structure, and the plurality of protrusions extend from the plurality of extension portions; (b) performing an electroforming procedure to form a conductive layer on partial surface of the mold; and (c) stripping the conductive layer from the mold, so as to obtain the conductive winding structure.