To provide a chemical spray vehicle for preventing a passenger step from damaging crops by touching the crops during spraying running in a farm field by automatically lifting the passenger step used by an operator in the chemical spray vehicle for performing chemical spray work while running across crops.SOLUTION: A chemical spray vehicle runs with left and right front wheels 6, 6 and left and right rear wheels 7, 7, in which a running vehicle body includes a control boom for spraying a chemical and a driver's seat, and a chemical tank 30 is provided behind the driver's seat. In the chemical spray vehicle, a passenger step is provided at a rear side of the rear wheels 7 on a left-right one side from the running vehicle body, and when the running vehicle body runs at a speed equal to or higher than a predetermined value, a motor 120 is driven so as to lift and rotate the passenger step.SELECTED DRAWING: Figure 9【課題】作物を跨いで走行ながら薬剤の散布作業をする薬剤散布車において、作業者が使用する乗降用ステップを自動で上昇させることで、圃場での散布走行中に乗降用ステップが作物に当たって傷つけることのない薬剤散布車を提供する。【解決手段】走行車体に薬液を散布する防除ブームと運転座席を設け、該運転座席の後方に薬剤タンク３０を設け、左右前輪６、６と左右後輪７、７で走行する薬剤散布車において、左右片側の前記後輪７後側に乗降用ステップを前記走行車体から設け、走行車体が所定値以上の速度で走行すると、モータ１２０を駆動して前記乗降用ステップを上昇回動させるように構成した。【選択図】図９
