Based on the PM₁₀,PM_2.5,SO₂,NO₂ and O₃ concentration data from the Xuyi county environmental monitoring station and the meteorological data from Xuyi station meteorological data from January to December of 2014,the air quality change under different meteorological conditions in Xuyi County is analyzed.The results show that the main pollutants in Xuyi county is PM_2.5 and PM₁₀while SO₂ and NO₂ pollution is light.Air pollution is more serious in spring and winter while it is not so severe in summer and autumn.Precipitation can improve air quality and remove air pollutants obviously.The air quality is better when the temperature is higher than 30 ℃ or lower than 0 ℃ while it is worse when the temperature is between 0 ℃ and 20 ℃.Moreover,the air quality is worse when the wind comes from east while it gets better when the wind comes from north.