With global climate warming, the research on regional extreme climate change has remarkable significance. This paper, based on the meterological data of the 60 stations in Qinling Mountains, analyzed the spatio-temporal characteristics of average, extreme high and low temperature in northern and southern Qinling Mountains, using Mann-Kendall mutation test and Kriging interpolation. The results showed that the order of climate trend rate of average annual temperature is that the southern part of Shaanxi < Guanzhong < other regions of China;the relationship of climate trend rate of annual high temperature is that: Guanzhong < other regions of China < the southern part of Shaanxi. The order of climate of extreme low temperature is that the southern part of Shaanxi ≈Guanzhong < other regions of China. The mutation year of average annual temperature in the two areas was 1997, which is later than the other regions of China. But, extreme high temperature fluctuation is not significant. At the same time, the mutation year of extreme low temperature in the two areas was 1978. Qinling Mountains have the important geographical feature dividing line effect. The spatial distributions of average and extreme low temperature in the areas of Qinling Mountains display that the high temperature is in the southern area, but the slow temperature in the northern area, which are distributed along the latitudinal. Contrarily, the spatial distribution of extreme high temperature shows that it is high in the eastern area, but low one in the western area, which are distributed through the longitude.