Abstract:This paper takes two humidity denaturation records obtained by Xinjiang sounding station as examples.Through graphic display and data list of data processing software,the humidity sensor of the radiosonde is analyzed after denaturation above,below and at 500 hPa,and the determination skills of whether to replay the ball and termination layer after denaturation of humidity sensor are summarized.It also points out the misunderstandings that should be paid attention to in the processing of special records,improving the data quality of high-altitude observation data and providing a reference for weather forecast,climate analysis,scientific research,and international exchange of meteorological information.