The invention creatively discloses a wiring tool for a circular knitting machine. The wiring tool comprises a first rod piece, a second rod piece and an elastic piece for connecting the first rod piece and the second rod piece; a first hook part and a second hook part are respectively arranged at one ends, far away from the elastic piece, of the first rod piece and the second rod piece; a connecting reference can be provided, so that the connecting work is simple and convenient. Meanwhile, the invention provides a wiring method applying the wiring tool, which comprises a wire hooking step, a cloth hooking step, a wire sleeving step and a connecting step; the wiring time can be saved, so that the circular knitting machine quickly recovers to work.