The utility model discloses a nozzle device for cleaning a pillar insulator by using dry ice. The nozzle device comprises a fixing mechanism, a rotation mechanism, a driving device and cleaning nozzles, wherein the fixing mechanism is provided with a fixing frame and a guide rail; the driving mechanism is arranged at the lower part of the guide rail; the rotation mechanism penetrates through the inner part of the rotation mechanism; the guide rail is provided with guide wheels of the rotation mechanism; the main body of the rotation mechanism is an arc light rail, a gear rack meshed with main shaft gear of the driving device is arranged at the outer side of the rail; limit position switches are arranged at two sides of the rail; the cleaning nozzles are arranged at two ends of the rotation mechanism; and the device is assembled on a lifting mechanism of a cleaning device by the fixing frame. The nozzle device has a simple structure, acts flexibly, has high cleaning efficiency, is easy to control and is suitable for use when the dry ice is used for cleaning the pillar insulator. Crossed double nozzles are adopted, thereby being suitable for efficient cleaning of the upper surface and the lower surface of the umbrella skirt of the pillar insulator and being clean and tidy without leaving any dead space. Aiming at pillar insulators with different voltage classes, the nozzle modules with different sizes are designed, so that the different nozzles are used due to different sizes, the optimal cleaning effect can be achieved, and the electrified on-line cleaning can be realized.