Abstract: Using the 2015-2019 ambient air monitoring data of Yichun City, the characteristics of ozone pollution were analyzed. The results showed that the problem of ozone pollution from 2015 to 2019 was generally aggravated, and the monthly average mass concentration of ozone was in a "double peak" distribution. The pollution was mainly concentrated in May through September. The relationship between the mass concentration of ozone and the mass concentration of particulates and precursors was analyzed, and generally showed opposite rules. Based on the analysis of the status and causes of ozone pollution in Yichun urban area, the feasible countermeasures for ozone prevention and treatment were proposed.