Tropospheric Ozone is a very important greenhouse gas and its global distribution is affected by human activities significantly. The radiative forcing (RF) of increasing tropospheric ozone will strengthen atmospheric greenhouse effect and the depletion of stratospheric ozone will reduce ultraviolet radiation absorption, which is negative RF leading to stratospheric cooling. Therefore, change in the concentration of atmospheric ozone and its impact on the climate has become a key issue. The decrease in the concentration of stratospheric ozone was found between late 1950s and the 1970s .In 1985, the observation of the stratospheric ozone hole at 60°S made by British Antarctic Expedition raised attentions and studies around the word. Currently, the concentration of ozone is still increasing in the troposphere and declining in the stratosphere, thus ozone plays different roles in the troposphere and stratosphere temperature change. Therefore, observations of tropospheric and stratospheric ozone concentration are still hot topics. This paper will overview studies on atmospheric ozone briefly over the past five years , including tropospheric and stratospheric ozone concentration ,ozone observation ,the impact of human activities and the insufficiency of current ozone researches.