As we all know, it is difficult to clean oil tube, aiming at this disadvantage, we have developed the cleaning device for oil tube. The cleaning device mainly consists of power washing system, nozzle, the mobile system of drill pipe and cleaning liquid. The structure of rotary high pressure nozzle has been designed, and removal experiments have been done on site. The analysis of experiments shows when the pressure is about 106MPa, the descaling efficiency of the rotary high pressure nozzle is about 95% dirt, so the device has good prospect of application. The cleaning device for oil tube by high pressure water jet has improved the working environment thoroughly, reduced the pollution, improved productivity, and saved energy. It has actualized the synchronous and coordinated development of the expanded reproduction and environmental protection.