In recent years,the issue of ozone pollution has gradually entered people's attention.Especially in summer,ozone has replaced fine particulate matter as the primary atmospheric pollutant.Unlike particulate matter that is commonly heavily polluted in autumn and winter,heavy pollution of ozone often occurs in clear weather in late spring or summer,and its pollution is easily overlooked and difficult to prevent.This article elaborates on the characteristics of ozone pollution in Heze city from 2021 to 2023,and takes June 2023 as an example to analyze the causes of ozone pollution from meteorological conditions,fine particulate matter,precursor nitrogen oxides(NOx)and volatile organic pollutants(VOCs).