A culture apparatus that cultivates a culture, which includes an outer case, an inner case configured with metal plates inside the outer case, a heater outside the inner case, and a door, which opens/closes an opening formed in front faces of the inner cases, includes: shelf rests on which side parts of a bottom plate of a shelf are to be placed, the shelf rests formed by pressing on side plates of the inner case; and a heat transfer sheet attached to an outer surface of at least one of the side plates and configured to transfer heat of the heater to the inner case, the heat transfer sheet including slits, intermittently formed, to bend the sheet to depressions of the outer surface of the side plate at positions corresponding to the shelf rests, after the heat transfer sheet is attached to the outer surface.