To prevent or restrict damage of grains due to high-pressure air transportation to prevent or restrict deterioration of commodity value.

This grain transport device is structured by providing a starting end of a flexible suction hose 5 with a suction nozzle 6 for sucking grains as a transported object 1, providing a terminal of the suction hose 5 with a suction device 9 for sucking inside the suction hose 5, and providing an intermediate part of the suction nozzle 5 with a grain separating and discharging device 8 having a separating net body 27, through which the suction air inside the suction hose 5 can pass and to which the transported grains are adhered and which has an axis in the lateral direction, a feeding roll for forcibly transporting the grains inside the separating net body with a transporting blade, a reservoir chamber for housing the grains transported by the feeding roll, a grain discharge opening 7 provided under the reservoir chamber, and an automatic opening/closing mechanism for automatically opening/closing the grain discharge opening 7.