The utility model discloses a potato picker, in order to provide a potato picker with reliable operation performance and high production efficiency. The potato picker comprises a stand, and a digging share, a driving device, a front separation facility, a rear separation facility arranged on a stand, and a road wheel. A front beam on the stand is transversely symmetrically provided with two pairs of collar plates (8, 9), wherein a pair of collar plates are relatively arranged under two ends of the front beam, outside the digging share and adjacent to the inside of the stand. The other pair of collar plates is bifariously arranged under the mid portion of the front beam, inside the mid portion of the digging share, and respectively forms a working assembly with two outside collar plates. A contour wheel (7) is symmetrically arranged outside the stand, under two ends of the front beam. The potato picker of the utility model is applicable to harvesting potatoes.