A winding device capable of easily winding an electric wire and a method of manufacturing a spiral electric wire are provided. The electric wire delivered by the delivery device is guided by the guide device toward the center portion of the projecting portion. The projecting portion of the winding device has an inclined surface whose outer diameter increases toward the base portion from the tip end on its outer peripheral surface. As a result, the electric wire can be wound around the projecting portion by utilizing the force of the delivery device, and the electric wire can be easily wound up.