PROBLEM TO BE SOLVED: To enable seed potatoes in a seed potato-housing hopper to be smoothly fed to a bottom conveyor by using a small and simple device, and the whole device to be small-sized and production cost to be inexpensive. SOLUTION: The device for feeding seed potatoes is equipped with the seed potato-housing hopper and the bottom conveyor installed on the bottom part of the seed potato-housing hopper and is brought to receive the seed potatoes in the seed potato-housing hopper by the bottom conveyor and convey them toward the outside. In the device, the bottom plate of the seed potato-housing hopper is supported to be freely movable to the hopper body, as well as arranged to be inclined downward toward the bottom conveyor, and a reciprocatably moving means for reciprocally moving the bottom plate to bring the seed potatoes in the seed potato-housing hopper to slip down. COPYRIGHT: (C)2011,JPO&INPIT