About Ozone we knows that it is atmosphere‘live be short of Ozone（the atmosphere is both indispensable (ozone layer)），and it is also a kind of environmental pollutants, some people said oxygen can produce ozone in the ultraviolet irradiation, does that mean to the face of the earth。In here have enough oxygen, The oxygen would be have reacted Above.
thus ozone is an air pollutant, so that the ozone is harmful, and some people say that ozone can absorb ultraviolet light, The conclusions that It was just supposed to be the high-altitude ozone layer(the Earth’s surface from the 14- 25 km altitude).ozone layer, the ozone layer in the earth’s outer space, the sun’s ultraviolet radiation Creating a ozone layer in the earth  Outer space.

Until the atmosphere is stable,the ozone layer is security blanket for people live. in normal circumstances . The ozone layer is stable; it is always to protect people from ultraviolet rays.So, “ozone can absorb ultraviolet rays, ultraviolet Produce ozone” is not contradictory, but these two reactions occur in different position in the atmosphere, There is no relationship between the two.