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By means of the percentile method to determine the extreme temperature events in Zhejiang Province, using the ttest and the climatic trend rate method, the interdecadal and interannual characteristics of extreme temperature events are analyzed. Base on the Kernel density estimation method, the extreme temperature event decadal variation characteristics in four seasons are discussed and the differences between urban and rural areas are compared. Results show that the extreme high and low temperature days have opposite characteristics, increase and decrease respectively, and the trend strengthens along with time, especially in the eastern coastal area of Zhejiang Province. The number of extreme hot days increases, the increment is the greatest in summer and the least in winter. The strength of extreme hot weather becomes stronger, especially in spring and winter. The number of extreme cold days decreases, especially in winter. The intensity of extreme cold events becomes weaker, especially in spring. The interannual variability of Zhejiang extreme temperature events in the western region is weaker than that in the eastern region. Urban areas show the stronger strength in extreme high temperature and the weaker strength in extreme low temperature.