Abstract: Based on the concentration of six pollutants from 2015 to 2020 in Shihezi,the temporal variation characteristics of air quality and pollutant concentrations in the past six years in Shihezi were studied.The results showed that the air quality improved in the past six years,and primary pollutants were inhalable particles and ozone,and there was difference between heating and non-heating periods.In winter,air quality had a negative propoertion of days with good air quality throughout the year,the peak concentration of pollutants appeared in the daytime.The correlation between meteorological elements such as relative humidity,air pressure,temperature and air quality index in Shihezi was analyzed,and the fitting equation was established.The results showed that the correlation between minimum relative humidity,minimum temperature and air quality index was good except winter,and the two meteorological elements can be considered priority in the air quality forecast.