To provide a dryer which reduces heat radiation from a door to the exterior while allowing a user to visually check a compartment through the door and inhibits the increase of a surface temperature of the door.

A dryer 1 dries an object to be dried while circulating hot air in a dry compartment 4 with a blower 5 and replacing a part of the circulated air. A door 2 of the dry compartment 4 includes a window part 10 in at least a part thereof so that a user visually checks the interior of the dry compartment 4. The window part 10 is formed by disposing two transparent plates 9 in a manner that a space is formed between the plate surfaces of the transparent plates 9. Outer air is suctioned to the blower 5 through the space between the transparent plates 9.