To provide a warm-air dryer that has both an adsorbent for adsorbing and holding moisture and a negative ion generator, that can thereby feed moisture independently of the humidity condition of the ambient air, and that can furthermore continuously feed moisture combined with negative ions.

The warm-air dryer is equipped with a blowing fan 15, a motor 16, and a heater 17 inside the main body housing 1. The heater 17 is arranged in a cylindrical warm-air passage along the outer peripheral edge of the housing 1, while the negative ion generator is arranged in the center area of a feeding path surrounded by the heater 17. With the adsorbent 40 disposed in a cold air passage on the blowing fan 15 side from the negative ion generator, the moisture released from the adsorbent 40 and the negative ions can be supplied simultaneously together with dry air.