PROBLEM TO BE SOLVED: To provide a drug solution spray working vehicle which can automatically perform an operation for accommodating a side boom in a boom accommodation position of the vehicle after drug solution spray work by the side boom.SOLUTION: A drug solution spray working vehicle comprises a control device 100 having a control constitution in which side booms 44 are contracted, the side booms 44 are closed, and boom heights are changed by operating a boom accommodation switch 144, and when changing inclination angles of the booms 44, accommodation operations are independently performed even if opening/closing angles of the right and left booms 44, elongation lengths of the booms 44 and the inclination angles of the booms 44 differ from each other, and the lengths, the opening/closing angles and the heights are controlled so that the booms 44 can be automatically accommodated in a preset accommodation position by turning on the boom accommodation switch 144 so as to be capable of reliably accommodating the booms 44.SELECTED DRAWING: Figure 10COPYRIGHT: (C)2016,JPO&INPIT【課題】サイドブームによる薬液散布作業後に、サイドブームを車両のブーム収納位置に収納する操作を自動的にできる薬液散布作業車両を提供すること。【解決手段】ブーム収納スイッチ144を作動させてサイドブーム44を縮め、サイドブーム44を閉じ、ブーム高さを変更し、さらにブーム44の傾斜角度を変更することを行うときに、左右のブーム44の開閉角度、ブーム44の伸縮長さ、ブーム44の傾斜角度が異なっていても、それぞれ別々に収納動作を行い、確実にブーム44を収納することができるようにブーム収納スイッチ144のオンで自動的にブーム44を予め設定されている収納位置に収納できるように長さと、開閉角度と、高さを制御する制御構成を有する制御装置100を備えた薬液散布作業車両である。【選択図】図10