PROBLEM TO BE SOLVED: To provide a combine harvester in which an operator operating in a cabin has a little risk of feeling unpleasantness and can perform a harvesting work in a comfortable state.SOLUTION: An air conditioner 52 is arranged at the front part of a ceiling part 48 of the cabin 12 covering an operation part 11, blow-out ports 55 and 56 for blowing out supply air that is outputted from the air conditioner 52 and supplied through a duct 54 into the cabin 12 are formed at the front side part and lateral side part of the ceiling part 48 and the front-side blow-out port 55 formed at the front side part is formed in a state in which the front-side blow-out port is positioned at the outside in the width direction of a machine body in the air conditioner 52.COPYRIGHT: (C)2013,JPO&INPIT【課題】キャビン内にて運転している運転者が不快に感じるおそれが少なく快適な状態で収穫作業が行えるようにすることが可能となるコンバインを提供する。【解決手段】運転部11を覆うキャビン12の天井部48の前部に空調装置52が備えられ、空調装置52から出力されてダクト54を介して供給される給気をキャビン12内に吹き出すための吹き出し口55,56が、天井部48における前部側箇所及び横側箇所に形成され、前部側箇所に形成される前部側吹き出し口55が、空調装置52における機体横幅方向外方側に位置する状態で形成されている。【選択図】図5