WORK VEHICLE

To decrease a height and a width of the bonnet of a work vehicle. A tractor having a bonnet 6 disposed forwardly of a driving operation section and an engine 5 arranged in an interior of the bonnet 6, the tractor comprising: a DPF 21 that collects particulate matter contained in the exhaust gas discharged from the engine 5 and disposed in front of the engine 5 inside the bonnet 6; and an SCR 22 that purifies nitrogen oxides contained in the exhaust gas and disposed in front of the engine 5 inside the bonnet 6.