Abstract: Based on the third generation mobile atmospheric laser radar system, \varphi (O₃) was measure from December 1^st, 2010 to March 31^st, 2011 and from May 7^th to June 9^th in 2011, in Chinese Research Academy of Environmental Sciences located in the north of Beijing, to study the vertical distribution characteristics of \varphi (O₃) in spring, summer and winter. The results show \varphi (O₃) highest value in summer and the lowest value in winter The control factor of ozone pollution is the meteorological background (sunny day, gentle breeze and inversion conditions). The diurnal variation of \varphi (O₃) showed a single peak and valley. The peak of \varphi (O₃) appeared between 14:00 and 18:00 in the afternoon, and the valley of \varphi (O₃) appeared between 22:00 and 09:00 of next day. Also, the single peak, the double-peak and the multi-peak were appeared in the vertical distribution of \varphi (O₃) above 10 km. However, the vertical and oblique distributions of \varphi (O₃) mainly appeared multi-peak below 5 km, and the skew distribution of \varphi (O₃) is closely related to the underlying surface and O₃'s precursors. The verticle distribution of \varphi (O₃) was inhomogeneities, but the diffrerence of \varphi (O₃) was 30×10^-9. The vertical law of \varphi (O₃) mainly exhibits two distribution characteristics, one is the accumulation area with high concentration at 3-5 km, and the other is no obvious high value accumulation area.