The present invention discloses a corncob picking device for a corn harvester, wherein at least three inner compartments (5) are evenly distributed in a drum (1) which can be rotatably mounted on a corn harvester, a compartment shaft (4) is mounted on the central axis of each inner compartment (5) respectively, a turbine transport disc (6) is mounted on each compartment shaft respectively, a transmission belt (3) is connected between the compartment shaft and a drum spindle (2) through a belt pulley at the upper end of each turbine transport disc respectively, corncob picking comb teeth (7) extending out the drum are mounted on the rear side in the rotation direction of each inner compartment respectively, a baffle (9) is mounted on the front side in the rotation direction of each inner compartment respectively, and a corncob outlet (8) is arranged on the rear end of the turbine transport disc of each inner compartment respectively. According to the present invention, while corncobs are picked, the straws are kept straight, thereby laying a foundation for the smash and recycle of the straws. Fig. 1
