Based on the data of ozone concentrations and meteorological elements in Jiangsu Province from 2018 to 2020, the distribution characteristics of meteorological elements in ozone pollution days in summer and the relationship between meteorological elements and ozone concentration were analyzed. The weather situation during 2019, which was seriously polluted by ozone, was classified. The prediction regression equation between ozone concentration and meteorological elements was established. The results showed that the weather types causing serious ozone pollution in 2019 were mainly warm advection type, high pressure ridge type, warm humid airflow type, subtropical high pressure controlled type and typhoon impact type. During the pollution days in summer, ozone concentration had a strong positive correlation with temperature and sun radiation, a weak positive correlation with wind speed, a strong negative correlation with relative humidity and a weak correlation with sea level pressure. The ranges of solar radiation high frequency, sea level pressure, air temperature, relative humidity and wind speed on ozone polluted days in summer in Jiangsu Province were 340~360 W·m-2, 1 001~1 007 hPa, 26~28 ℃, 65%~75%, 2.5~3.0 m·s-1, respectively. In order to quickly predict the ozone concentration, a regression equation of the hourly average ozone concentration and the meteorological elements was established.