Using non-parametric tests, wavelet transform, cyclical overlay trend model analysis methods, the paper analyzed climate factors in Jinghe River basin and the change trend of annual runoff and the separation of influence of climate factors on runoff volume based on the precipitation,meteorological and flow data in Jinghe source area for nearly 48years, Results show that:① In the next 50years temperatures, rainfall and runoff will remain original trend of increase. ② In the interannual variations, the temperature, precipitation and runoff exist are 11,4, 16years of change cycle. ③ Using periodic superimposed trend model to simulate and forecast origin runoff, the influence of climate change on runoff from 1998to 2008was positive, separating out nearly 10years influence quantity of climate change on runoff know that the influence of precipitation change on JingHe runoff is more outstanding.