Based on the observation data from 50 meteorological stations during 1961 to 2015 in Jilin Province,the index of wind erosion climatic erosivity factor(C)and its influenced factors were analyzed.The result showed that the index of wind erosion climatic erosivity factor rose rapidly since January,reached the maximum in April and minimum in July.The seasonal features of Cvalue decreased in the order:spring>winter >autumn>summer.The annual feature of Cvalue decreased significantly,which the climatic tendency was -18.7/decade.Cvalues of spring,autumn,and winter decreased significantly,which the Cvalue of summer was not significantly.The decade feature of Cvalue was the lowest in recent five years.The index of wind erosion climatic erosivity factor decreased gradually from west to east.The wind erosion climatic erosivity in the west is the strongest,followed by the middle and the east.The Cvalues of meteorological stations in Jilin Province decreased,which the significant stations were located in the middle part.Wind speed was the primary climatic factor of the index of wind erosion climatic erosivity factor of west zone,while the strong wind days were the primary climatic factor of middle and east.