To provide an air blowing/sucking device in which the length of a nozzle in the lengthwise direction of a device having a nozzle part in a main body can be adjusted and no air blowing noise or the like is generated.

An air blowing/sucking device 1 is composed of a main body part 10', a nozzle part 50 and a handle 20'. The handle 20' is provided with a supporting rod 21, and the supporting rod 21 is held in a supporting rod engaging hole formed on the main body part 10'. The nozzle part 50 is composed of a vacuum nozzle 51 and a blower nozzle 52 combined by a nozzle part combining part and is integrally configured. The nozzle part 50 has an adjustment margin extended in the lengthwise direction and the adjustment margin is held by the main body part 10'. By holding the supporting rod 21 and the adjustment margin at desired positions in respect to the main body part 10', the full length of the device can be adjusted.