Abstract: The development and importance of sounding observation as well as the present situation of sounding observation in China are introduced.In particular, the progress of China’s Beidou satellite navigation sounding observation system in technology and equipment is presented.The progress proves that the independently developed navigation sounding system has reached or approached the top-notch level in the world in terms of observation accuracy, observational data quality control, quality evaluation, etc. Moreover, the operational feasibility of the round drifting sounding system, which is not only equipped with smart and automatic observation equipment but also equipped with multi observational tasks, is prospected and anaylzed.