PURPOSE: To provide a low-cost drying facility having ≥ a prescribed capacity and occupying only a small area.

CONSTITUTION: This facility is composed of multistage cylindrical drying tanks 31 and 32 vertically put in layers, for accommodating and drying grains to a prescribed water content and designed so as to supply ordinary-temperature dehumidified air from a dehumidifying and air-blowing mechanism 22 to the lower part of each tank 31, 32 and to discharge the grains fed through the upper side into the upper tank 31 through the lower side of the lower tank 32 to a storage silo.