Abstract The data from the FY-3A/B Total Ozone Unit (FY-3A/TOU) and the Solar Backscatter Ultraviolet Sounder (SBUS) were collected to analyze instruments' onboard performance. Retrieval of total column ozone and ozone profile were made using the post-launch calibration coefficients. Validation was made by comparing with the results of ground-based stations, radio-sonde measurements and products from other satellite senors. The 2008-2011 Antarctic ozone hole and Arctic ozone depletion were analyzed using the FY-3 ozone products.