Abstract: Based on the near-surface ozone (O₃) concentration data and the meteorological observation data of Qinhuangdao from January of 2013 to December of 2014 and from January of 2017 to June of 2019, this paper analyzes the correlation between O₃ concentration and temperature in spring, summer, autumn and winter using the generalized additive model (GAM), regression analysis method, and EmpowerStats statistical analysis software based on R language controlling the hybrid effect of related meteorological elements (including air pressure, relative humidity, sunshine duration, total cloud cover, etc.) and time variation trends.The results show that the O₃ concentration reaches its maximum in summer, and is relatively lower in spring and the lowest in winter, respectively, which is closely related to the seasonal change in temperature.In each season, the O₃ concentration shows a nonlinear correlation with the air temperature, and the fitted curve has an inflection point.However, the correlation relationships on both sides of the inflection point have clear difference.Specifically, in spring, the O₃ concentration increases by 7.6 μg·m^-3 with the 1 ℃ increase of temperature when the daily mean air temperature (DMT) is above 15.0 ℃ and the increase rate is the 4 times of that when the DMT is below 15.0 ℃.In summer, when the DMT is above 27.2 ℃, the O₃ concentration increases significantly with the DMT with a rate of 13.9 μg·m^-3 per 1 ℃ which is the 11.6 times of that below 27.2 ℃.In autumn, when the DMT is above 21.4 ℃, the ozone concentration increases significantly with the increase of temperature with a rate of 47.5 μg·m^-3per 1 ℃ which is the 19.1 times of that below 21.4 ℃.On the contrary, the variation of O₃ concentration in winter is relatively stable and is hardly affected by the temperature.Notably, the rapid increase of O₃ concentration under the high temperature in summer and spring should be paid high attention due to its high basic value.