The invention discloses an annealing oven by adopting heat pipe to proceed to cool rapidly in the annealing technique domain, which comprises the following parts: hot-blast outlet, heat pipe radiating end, cold air blower, wind screen, heat-exchanging room, heat pipe endotherm end, heat cycle fan, downward vent, thermal wall, air deflector, heating chamber, upward vent, power handspike, cooling chamber, wherein the heat pipe endotherm end is fixed in heat-exchanging room; the heat pipe radiating end is installed in cooling chamber; the cold air blower is installed in the lower part of cooling chamber; the hot-blast outlet is installed on the top of cooling chamber; the thermal wall is installed between heat-exchanging room and heating chamber; there are no downward vent and upward vent on the thermal wall; the wind screen is installed next to thermal wall on the side of heat-exchanging room of thermal wall; the wind screen connects to power handspike. The invention adopts heat pipe in heat-exchanger rig, which improves the efficiency of heat transfer.