The HALOE data from 1992 to 2001 are used to analyze the zonal distributions and the seasonal variations of O₃ mixing ratio in the stratosphere at different latitudes,the results indicate that there are obvious differences of zonal distributions of O₃ mixing ratio in the stratosphere between different seasons.In summer of either NH or SH,the zonal distributions of O₃ mixing ratio are rather small in the stratosphere,and there are disturbances at the middle-high latitudes in other seasons,which strengthen along with the latitude increase and are the strongest in winter.The seasonal variations of O₃ zonal disturbance are similar to the strength of planetary wave in the stratosphere.Together with the NCEP/NCAR reanalysis data,it is shown that the clear signals of wave 1 obtained from the O₃ zonal disturbance and the geopotential height disturbance,which are nearly in phase in DJF at the middle-high latitudes.So the O₃ zonal disturbances are resulted from the planetary wave in the stratosphere.At the middle-high latitudes,wave 1 play the most important role in the O₃ zonal disturbances,while at 30°,the relationship between O₃ zonal disturbances and planetary wave is not very close.At low latitude,planetary wave cannot propagate upward to the stratosphere to affect O₃ zonal distributions.The results are due to meridional O₃ transportation by disturbance flows and influence of basic flow makes observed O₃ disturbance having different phases with the origin disturbance.