Provided are a manufacturing method for a wiring harness, and a device used for wiring harness manufacturing. The method and the device improve processing efficiency of assembled drawing boards in wiring manufacturing. The device used for wiring harness manufacturing is used to manufacture wiring harness which is arranged on the drawing board by a wiring body. The device used for wiring harness manufacturing comprises a base drawing board, an auxiliary drawing board used for binding, and a travel mechanism. The base drawing board maintains the wiring body by a wire temporary maintaining portion and a connector maintaining portion. The auxiliary drawing board used for binding is provided with a wire maintaining tool used to maintain the wires of the wiring body, and is combined with the base drawing board from the inner side. Thus, the wire maintaining tool is extruded closer to the front side than the base drawing board. The travel mechanism makes the auxiliary drawing board used for binding which is configured on the inner side of the base drawing board relatively move on the directions of close to the base drawing board and away from the base drawing board. The auxiliary drawing board used for binding is far away relative to the base drawing board. Thus, the wire maintaining tool is drawn back close to the inner side than the base drawing board.