A crop dryer capable of effectively utilizing the entire dryer body when used in any of a circulation drying mode and a continuous fall drying mode includes a dryer body into which a crop is provided, a hot wind tunnel that is disposed on one side of the dryer body and through which hot wind is supplied to inside of the dryer body, and a wind discharge tunnel that is disposed on the other side of the dryer body and through which hot wind is discharged from the inside of the dryer body. The hot wind tunnel and the wind discharge tunnel each include a plurality of vertically independent spaces. The corresponding spaces of the hot wind tunnel and the wind discharge tunnel are positioned at substantially same heights. Each space of the hot wind tunnel is communicated with a hot wind generating device and configured to receive individual supply of hot wind generated by the hot wind generating device to the each space. A height range of the inside of the dryer body, into which the hot wind is supplied from the spaces of the hot wind tunnel, serves as a drying unit to dry the crop provided into the dryer body.本發明係一種穀物乾燥機，在以循環式與連續下流式中任一乾燥模式使用之情況下，均能有效利用乾燥機本體的整體。本發明之穀物乾燥機具備：乾燥機本體，接受穀物投入；熱風箱，向配設在該乾燥機本體的一側之前述乾燥機本體內供給熱風；以及排風箱，從配設在前述乾燥機本體的另一側之前述乾燥機本體內排出熱風；前述熱風箱及前述排風箱分別具有上下獨立之複數個空間，且將前述熱風箱及前述排風箱的相對應之各空間各自配設成位在約略相同高度，前述熱風箱的各空間分別與熱風產生裝置連通，並各別將由前述熱風產生裝置所產生之熱風供給至前述各空間，且將自前述熱風箱的空間接受熱風供給之前述乾燥機本體內的高度範圍作為乾燥部，而使投入至前述乾燥機本體內之穀物乾燥。
