Based on temperature data from 1 urban station and 4 suburban meteorological stations of Shijiazhuang city during 1962—2009,and using temperature comparative analysis and linear trend methods,the paper analyzes the characteristics and the increasing rate of urban heat island(UHI) intensity of Shijiazhuang,and its impact on the long-term trend of recorded surface air temperature change.Results show that UHI effect is obvious near Shijiazhuang urban station,especially for minimum temperature or night mean temperature.The strongest UHI intensity occurs in winter and the weakest in summer.Large diurnal variation is observed,with UHI intensity being the strongest in early morning,and the weakest in afternoon between 14:00 and 16:00 Beijing Time.For the past 48 years,UHI intensity undergoes a significant increase near Shijiazhuang urban station,and the increasing trend in minimum temperature is much more significant than that in the maximum temperature.The average increasing of UHI intensity around Shijiazhuang urban station reaches 0.19 ℃/(10 a)during 1962—2009,and the contribution of UHI increasing to surface air temperature increase is 67.9％,or in other word,about two thirds of the urban warming observed at the city station can be attributed to the rapid urbanization in the past half century.