The Ultraviolet Ozone Vertical Profile Probe (UOVPP) on FY-3A meteorological satellite developed by our country is introduced for measuring the extraterrestrial solar ultraviolet spectra

and the spectral irradiance data are obtained by the probe successfully. The UOVPP is a compact UV-VUV spectral radiometer worked at 160~400 nm. The composition and principle of the probe are reviewed and three kinds of working modes

namely

atmospheric mode

solar mode

and standard lamp mode

are described. Furthermore

the spectral irradiance calibration of the probe under the solar mode is introduced

which is carried out at 160~300 nm and 250~400 nm respectively owing to the limitation of source characteristics. Finally

the solar ultraviolet spectrum captured by the UOVPP and processed data are given. It is shown that the solar continuous spectrum at 160-400 nm and solar discrete spectrum of 12 characteristic wavelengths at 250-340 nm measured from UOVPP on orbit are in good agreement with those from SBUV/2

and their measurement uncertainty is within ±5%.