We have already continually taken the measurement of total column amount of O3, NO2 as well as stratospheric O3, NO2 over Zhongshan Station, Antarctica. This paper analyzes the seasonal variation of NO2 and its relationship to O3 during the Antarctic Ozone Hole in 1993 - 1995 and points out that the decrease of atmospheric NO2 is one of the important reason to the strengthening of Antarctic Ozone Hole
