To provide a low-cost multipurpose working vehicle.

A generator supplies electricity to a field lighting system and a working electric appliance, and a blower/smoke exhauster blows air or exhausts smoke. The generator and the blower/smoke exhauster are series- connected for interlock to a single drive source, and an intake/exhaust duct is connected for communication to the blower/smoke exhauster. A tip opening of the intake/exhaust duct is provided with an opening and closing device, which can adjust the opening degree of the tip opening. The blower/smoke exhauster is provided with a foaming device, so that the blower/smoke exhauster can deliver foam produced by the foaming device.