To provide a nozzle device having a wide cleanable area and simple structure.

A rotary nozzle device (10) comprises a fixed part (12) including a first water passage channel (12a) inside and connected to a water supply source, and a rotary part (14) including a second water passage channel (16) fluidly communicating with the first water passage channel inside and placed so as to rotate on the shaft (12b) of the fixed part, wherein the rotary part is provided with at least one nozzle hole (20 and 22) extending from the second water passage channel to the tip end of a nozzle positioned on the downward face of the rotary part, and wherein at least one (20) of the nozzle holes inclines at an angle α to the shaft at the place of the tip end of the nozzle (20b) when viewing along a tangential line to a virtual circle (C1) with a predetermined radius centering on the shaft in which the tip end of the nozzle is positioned on the circumference.