To provide a combine capable of reducing risk of transport jamming or residence of threshing processing object, even when an amount of a reaped grain culm carried from a reaping part is varied.SOLUTION: A grain culm transport device 10 for transporting rearward, reaped grain culm reaped by a reaping part, comprises: a lower side rotary body 44 which is supported rotatably around a lateral shaft core on a downstream side of a transport direction of a transport case 42; a rotary drum 46 which is supported rotatably around a lateral shaft core on a transport direction upstream side; and a plurality of endless rotors 47 for transport which are wound around the lower side rotary body 44 and the rotary drum 46 and are arranged at an interval in a horizontal direction. The reaped grain culm is transported through a space between lower side extended parts of the endless rotors 47 and a bottom face 42a of the transport case 42. The grain culm transport device comprises a vertical height adjustment mechanism 49 which can change and adjust a vertical height with respect to the bottom face 42a of the transport case 42 of the rotary drum 46 to three or more stages.SELECTED DRAWING: Figure 3【課題】刈取部から搬入される刈取穀稈の量が異なる場合であっても、搬送詰まりや脱穀処理物の滞留等が発生するおそれを少なくすることが可能なコンバインが望まれていた。【解決手段】刈取部にて刈取られた刈取穀稈を後方に向けて搬送する穀稈搬送装置10に、搬送ケース42の搬送方向下手側に横向きの軸芯周りで回転可能に支持された下手側回転体44と、搬送方向上手側に横向きの軸芯周りで回転可能に支持された回転ドラム46と、下手側回転体44と回転ドラム46とにわたって巻回されるとともに左右方向に間隔をあけて設けられた複数の搬送用の無端回動体47とが備えられ、無端回動体47の下側張設部分と搬送ケース42の底面42aとの間を通して刈取穀稈を搬送するように構成され、回転ドラム46の搬送ケース42の底面42aに対する上下高さを3段階以上にわたり変更調整可能な上下高さ調整機構49が備えられている。【選択図】図3