The present invention provides a combine, in which a threshing device thereof is easy to perform preventive maintenance and the right wall of the threshing device can be prevented from deformation. An exhaust pipe (15) which is connected to an exhaust opening of a purification device (14) extends upwardly from an upper side of the purification device (14), then extends toward a left side at the front side of a lifting device (9) and extends towards a rear side at the left side of the lifting device (9). A cover (60) of a threshing device (4) is freely ratable and supported by a support shaft (61) that is disposed on an upper part of a left wall (4A) of the threshing device (4) in a front-rear direction. The rotational trajectory at the right side end part of the cover (60) is set to avoid contacting the exhaust pipe (15).本發明提供聯合收割機，能夠容易地進行脫穀裝置的維修保養，並能夠防止脫穀裝置的右壁的變形。使連接於淨化裝置(14)之排氣口的排氣管(15)從淨化裝置(14)向上側延伸，在升降裝置(9)的前側向左側延伸，在升降裝置(9)的左側向後側延伸，將脫穀裝置(4)的處理筒罩(60)轉動自如地支撐於設置在脫穀裝置(4)的左壁(4A)之上部的前後方向的支撐軸(61)，並將處理筒罩(60)之右側端部的轉動軌跡設定在避開排氣管(15)的位置。
