The invention provides a corn harvesting, peeling and threshing quality inspection device, which includes a support frame, a reinforcement frame, a spring, a vibration box, a connecting block, a vibration motor, a PLC, a mobile quality inspection fixing frame structure, a corn separation and collection pipeline structure, a sensor, a corn The sundry separation processing box structure, the quantitative storage drying cylinder structure, the support rod, the peeling and threshing processing box structure, the first motor, the peeling cylinder, the second motor, the threshing cylinder and the buttons, and the reinforcement frame is welded on the inner wall of the support frame The lower part: the springs are respectively welded on the left and right sides of the upper end of the support frame, and a vibration box is welded on the upper end. The beneficial effects of the present invention are: through the setting of the mobile quality inspection fixed frame structure, when in use, it is convenient to drive the movable frame to move left and right, and at the same time, it is convenient to make the sensor perform quality inspection on the corn in the vibrating box more uniformly, thereby avoiding It solves the problem that the traditional device can only perform quality inspection on a single position.