To provide a mower capable of suppressing an occurrence of such a trouble that cut grass guided toward a grass container is dropped from between bottom plates arranged backward/forward in a grass duct.SOLUTION: The mower includes a liftable/lowerable mower unit 7, and a grass duct 8 for guiding cut grass to a grass container placed rearward the mower unit 7. The grass duct 8 includes: a first bottom plate 31 in the mower unit side； a vertically-swingable second bottom plate 41 in a car body frame side； and a linkage mechanism 43 vertically swinging the second bottom plate 41 in conjunction with the lifting/lowering of the mower unit 7. The linkage mechanism 43 links the mower unit 7 with the second bottom plate 41 in such a manner that, in a grounding state of the mower unit 7, a front end of the second bottom plate 41 comes close to a rear end of the first bottom plate 31, and, as the mower unit 7 is gradually lifted upward and rearward, the second bottom plate 41 swings with the front inclined upward, and the rear end of the first bottom plate 31 enters downward the second bottom plate 41, while retaining a proximity state with the second bottom plate 41.SELECTED DRAWING: Figure 4【課題】集草容器に向けて案内される刈草が、集草ダクトにおいて前後に並ぶ底板の間から零れ落ちる不具合の発生を抑制できる草刈機を提供する。【解決手段】昇降可能なモーアユニット７と、モーアユニット７から後方の集草容器に刈草を案内する集草ダクト８とを備え、集草ダクト８は、モーアユニット側の第１底板３１と、車体フレーム側の上下揺動可能な第２底板４１と、モーアユニット７の昇降に連動して第２底板４１を上下揺動させる連係機構４３とを備え、連係機構４３は、モーアユニット７の接地状態では、第２底板４１の前端部が第１底板３１の後端部に近接し、モーアユニット７が後上方に向けて上昇するほど、第２底板４１が前上がり方向に揺動して、第１底板３１の後端部が第２底板４１との近接状態を維持しながら第２底板４１の下方に入り込むように、モーアユニット７と第２底板４１とを連係している。【選択図】図４
