There is provided a method for manufacturing an insulated wire, including at least: coating an outer periphery of a running wire with an insulation coating material discharged from a coating material discharging tank; baking the insulation coating material by an incinerator, the insulation coating material being used for coating the outer periphery of the running wire; and cooling the running wire by a cooling mechanism so that a temperature of the running wire before being coated with the insulation coating material, is a specific temperature, based on a temperature of the running wire detected by a temperature detector, wherein the coating, the baking, and the cooling are repeated.