PURPOSE: To provide a comforter dryer which eliminates a troublesome labor to attach or detach an appliance, etc., generating at each usage when a comforter, etc., is dried at a bed time, and does not give a feeling of foreign substance at the time of sleeping, and has an excellent durability.

CONSTITUTION: A hot air unit 7 which is installed by an L-shape metal fitting 19 is provided at the center of a side surface of a bed 8. An air blowing bag 14 is constituted on the sleeping surface of an air blowing sheet 11 which is sewn into a box shape so as to be fitted on a mattress 10. An air blowing-in port 12 is provided on the outer peripheral part at the center of the longer edge of the air blowing bag 14, and the air blowing-in port 12 communicates with a duct of the hot air unit 7. The duct 9 consists of a vertical part 35 which protrudes upward, a bent part 36 which changes the air blowing direction to the mattress 10 side, and a horizontal part 37 with a blowing-out port 38. Then, the upper part of the end surface of the blowing-out port 38 is projected to the blowing out direction such as eaves shape. By this method, the tip part of the horizontal part 37 with which a human body often comes into contact is easy to crush, and a feeling of foreign substance can be lessened.