Abstract: Water resources refer to water on the earth that has a certain amount and available quality that can be supplemented and utilized by nature. Affected by natural geographical factors and human activities,the evolution of water resources has certain periodicity and regularity.Based on the results of the third water resources survey and evaluation in Jilin Province,this paper analyzes and evaluates the quantity,quality,influencing factors and trends of water resources in Jilin Province from 1956 to 2016.Scientific and rational analysis and evaluation of water resources evolution can accurately grasp the temporal and spatial distribution patterns and trends of regional water resources,and provide an important basis for the future development of water resources strategic planning, implementation of major water conservancy projects,and implementation of the most stringent water resources management system.