PROBLEM TO BE SOLVED: To provide a cutting height sensor 69 for detecting a ground height in a cutting unit 16 for cutting a fluffy harvester in a field and transporting it toward a threshing unit 33, and to obtain the ground height detected by the cutting height sensor. In a combine harvester provided with a control device 63 that raises and lowers the cutting section to control the cutting height, the artificial cutting height required when switching from standard cutting to lodging cutting and conversely from lodging cutting to standard cutting. Provided is a combine 1 capable of eliminating the adjustment operation, thereby reducing the operational burden on the operator, without making an operation error, and preventing uncut parts during lodging cutting. SOLUTION: A control device 63 for raising and lowering a cutting unit 16 to control a cutting height is used when performing a cutting operation by increasing the driving speed of the cutting unit in order to cut a fallen fluffy culm in a field. Controls the cutting height so as to prevent uncut cutting by setting a low cutting height control target value. [Selection diagram] FIG. 8【課題】圃場の立毛穀稈を刈取って脱穀部３３に向けて搬送する刈取部１６に対地高さを検出する刈高さセンサ６９を設け、この刈高さセンサの検出した対地高さに基づいて刈取部を昇降させて刈高さを制御する制御装置６３を設けるコンバインにあって、標準刈りから倒伏刈り、逆に倒伏刈りから標準刈りに切替える際に必要となる人為的な刈高さ調節操作を無くし、それにより作業者の操作負担を軽減しながら操作誤りなく、倒伏刈りを行う際の刈残しを防止することができるコンバイン１を提供する。【解決手段】刈取部１６を昇降させて刈高さを制御する制御装置６３は、圃場の倒伏する立毛穀稈を刈取るために刈取部の駆動速度を増速させて刈取作業を行う際には、刈高さの制御目標値を低く設定して刈残しを防止するように刈高さを制御する。【選択図】図８
