The invention discloses a roller-type corn picking mechanism which comprises an installing bracket, a front guide cone, a pipe shaft, dragon claw veins and a drawn rib, wherein the dragon claw veins are welded on the pipe shaft spirally, the drawn rib is welded at the tail end of the pipe shaft that is connected with the front guide cone by a front support, and the front support is installed on a rack of a corn picking device. The dragon claw veins are shaped like a nine-tail hook and distributed spirally at intervals along with an advancing rib. The axial length of the pipe shaft of the nine-tail hook shaped dragon claw veins ranges from 20mm to 50mm, and length of the circumferential direction of the pipe shaft ranges from 15mm to 30mm. By adopting the roller-type corn picking mechanism, the walking speed can be coordinated with the stem pulling speed and the axial advancing speed when in corn picking, the biting of corn ear picked can be less, and the breaking rate is low.