Abstract: A culture apparatus includes a heat insulating box main body having an inner box; a culture vessel; a duct and a circulation blower forcing convection of a gas in the culture vessel; a humidifying pan disposed on the bottom of the culture vessel and positioned inside the duct; a heat pipe having a heat insulating section, a heat input section disposed at one end of the heat insulating section and a heat dissipation section disposed at the other end of the heat insulating section. The heat pipe is attached to the culture apparatus with the heat dissipation section being disposed outside the culture apparatus, the heat insulating section passing through the heat insulating box main body and the inner box, and the heat input section being disposed in a gas passage in the duct.