To provide a work vehicle capable of preventing clogging of a recovery system by aligning seedling trays neatly.SOLUTION: A work vehicle comprises: a planting device taking out a pot seedling from a seedling tray where pot seedlings are arrayed in a traveling vehicle body to plant the pot seedling in a farm field; a seedling tray conveyance device of the planting device conveying a fed seedling tray from an upstream side of a transportation path to a downstream side; a seedling tray housing part housing the seedling trays; a guiding part which changes over between a first attitude supporting the seedling tray and a second attitude guiding the seedling tray into the seedling tray housing part; and a regulation component which regulates conveyance of the seedling tray from a prescribed position of the guiding part to the downstream side in a feeding direction of the seedling tray, and which is formed separately from the guiding part.SELECTED DRAWING: Figure 12【課題】苗トレイをきれいに整列させ、回収装置の詰りを防止できる作業車両。【解決手段】走行車体に、ポット苗が配置された苗トレイからポット苗を取り出して圃場に植え付ける植付装置と、前記植付装置は、供給される前記苗トレイを、搬送路の上手側から下手側に向けて搬送する苗トレイ搬送装置と、苗トレイを収容する苗トレイ収容部を備えた作業車両において、苗トレイを支持する第1姿勢と、苗トレイを苗トレイ収容部へ案内する第2姿勢とに切り替わる案内部を設け、前記苗トレイが案内部の所定位置より苗トレイの送り方向下手側に搬送されることを規制する規制部材を案内部とは別体に形成したことを特徴とする作業車両。【選択図】図12