PROBLEM TO BE SOLVED: To provide a combine-harvester having improved rigidity of supporting an exhaust gas purification device.SOLUTION: The combine-harvester including an exhaust gas purification device for purifying exhaust gas of the engine, on the machine body frame, includes: a urea SCR catalyst that constitutes a part of the exhaust gas purification device and that executes purification processing by reducing the exhaust gas of the engine using ammonia generated from urea water, at the rearward of the engine on the machine body frame between the thresher and the grain tank； and a support member that supports the urea SCR catalyst. One of both ends of the support member is fixed to an external wall of an engine room storing the engine on the upper side of the machine body frame, and the other end of the support member is fixed to a mounting part of a pitching cylinder that projects upward from the machine body frame and pitching-drives a travel device provided on the lower side of the machine frame.SELECTED DRAWING: Figure 5
