To provide a new chaff spraying technique which can evenly spray loaded chaffs to a field, and collect the residue of chaffs in one place and efficiently discharge it.SOLUTION: A chaff spraying device 1 is configured such that: there are provided a square bottom surface 3 provided with a spray port 31 having an opening/closing mechanism and openable/closable downward, and a device skeleton body 2 comprising peripheral surfaces 4 surrounding a range of a prescribed height dimension of the four front, rear, left and right peripheral surfaces above the bottom surface 3; a container sheet 8 is internally mounted on the skeleton body 2 so as to be lining; an upper region corresponding to the region of the prescribed height dimension is opened from the lower end of at least any one surface of the rear surface, left surface and right surface of the peripheral surfaces 4; a discharge gate 6 including a discharge door 60 capable of opening/closing the opening is provided; stored items can be sprayed from the spray port of the bottom surface 3; and in the case of cleaning, the discharge door 60 is opened so as to discharge the remaining stored items.SELECTED DRAWING: Figure 1
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