PROBLEM TO BE SOLVED: To provide a combine-harvester capable of avoiding a risk that dust may be deposited in an exhaust pipe and efficiently emitting an exhaust gas into the air.SOLUTION: A combine-harvester comprises: an operation part 4 positioned on the front side of a machine body; a prime mover part 8 positioned below the operation part 4; a grain tank 6 positioned on the back of the operation part 4; a thresher 5 positioned on the lateral side of the grain tank 6; and an exhaust gas treatment equipment 47 for purifying the exhaust gas of an engine 21. The exhaust gas treatment equipment 47 is positioned on the back side of the machine body of the operation part 4. Between the thresher 5 and the grain tank 6, an exhaust pipe 92 for discharging the treated exhaust gas to the outside is extended toward rear upper position so that the exhaust port 93 is positioned above the upper end of the thresher 5. The exhaust port 93 is opened in a transversely opened state in order to discharge the exhaust gas upward of the thresher 5.SELECTED DRAWING: Figure 2