PURPOSE: To provide a drying device wherein many tabular works can be dried surely and with good efficiency.

CONSTITUTION: There is arranged a supporting portion 20 supporting, with inclination, a tray 1 which is provided with a bottom plate 13 through which air can freely pass and a side wall plate 14 through which air can not pass and accommodates a plurality of works. And, there is arranged a hot air duct 23 which is connected freely to be mounted or to be released on an upper portion of the side wall plate 14 of the tray 1 supported on the supporting portion 20 and sends air. Further, there is arranged a suction duct 24 that is connected to a bottom portion of the tray 1 supported on the supporting portion 20 and executes an enforced suction of the air sent from the hot air duct 23 through the bottom plate 13 of the tray 1.