The present invention provides a tractor, comprising: a vehicle body that is supported by a plurality of wheels; a switching valve that is disposed rearwardly of a vicinity of a rear end of a driver's station floor as viewed from above; a duct connecting member that is positioned at the front end of the driver's station floor and provided with a plurality of duct connecting ports; and a plurality of metal ducts that connect the switching valve and the duct connecting member below the driver's station floor, wherein the metal ducts are positioned on a laterally outer side of a portion, that is located below the driver's station floor, of a pedal arm for an operation pedal, the pedal arm being disposed at a front portion of the driver's station floor.