PROBLEM TO BE SOLVED: To provide an engine device of a combine-harvester in which an exhaust gas purification device 60 (a first case 61 or a second case 62) can be fixed to an engine room 92 with a simple support structure, and assembly workability as well as maintenance workability of the first case 61 or the second case 62 can be improved.SOLUTION: A combine-harvester comprises: a traveling machine body 1 in which a reaper 3 and a thresher 5 are installed an engine 14 for driving the reaper 3 or the thresher 5 a first case 61 for removing particulate substances in exhaust gas of the engine 14 and a second case 62 for removing nitrogen oxide substances in the exhaust gas of the engine 14. The combine-harvester has a structure comprising an engine room 92 in which the engine 14 is internally provided. An exhaust gas purification device 60 formed by the first case 61 and the second case 62 connected in parallel is supported horizontally on an upper side part of the engine room 92 facing the thresher 5.SELECTED DRAWING: Figure 6
