The atmospheric ozone is an object of meteorological study all along.The ozonesonde system is more effective technique for direct measurement of ozone vertical structure in the atmosphere. Ozone data are required in meteorology, atmospheric science, space science and in the solar-terrestrial science as well, at present those requirements are even urgent due to the ozone depletion in the stratosphere. For this reason, ozonesonde system has been developed in China since beginning of 90’s the last century. The developed ozonesonde is GPS ozonesonde and has been tested in laboratory, compared with other ozonesonde used at the world ozone monitoring network for main technical specifications. The GPS ozonesonde system has been used in Beijing district and in the Antarctic expedition,now the GPS ozonesonde system is being perfected for operational use in China in the near future. The structure, components, main technical specifications of the developed GPS ozonesonde system and some performance test results are presented and discussed in this paper, some results on ozone vertical profiles obtained by using the GPS ozonesonde system are given as well.