PROBLEM TO BE SOLVED: To provide a combine-harvester favorably opening/closing a shutter that can temporarily store grains when performing quality measurement of the grains.SOLUTION: The combine-harvester comprises: a temporary storage part T provided in a grain tank, including an intake port 72 formed therein, loading parts of grains conveyed from a thresher from the intake port 72 and temporarily storing them； and a quality measurement part 50 for detecting the quality of the grains stored in the temporary storage part T. The temporary storage part T includes a discharge port 73 capable of discharging the grains stored in the temporary storage part T to the gran tank, and a shutter 76 capable of changing a position between an open position for opening the discharge port 73 and a closed position for closing the discharge port 73. The combine-harvester further includes a control part that, when the measurement by the quality measurement part 50 is finished, controls the shutter 76 to take the open position and, when all the grains in the temporary storage part T are discharged to the grain tank, controls the shutter 76 to take the closed state.SELECTED DRAWING: Figure 6
