Abstract: Harbin is one of the major water shortage cities in China. To rationally utilize water resources, maintain the sustainable development of water resources and social economy, it is necessary to evaluate the environment carrying capacity of water resources in Harbin. In this study, the main influencing factors of water resources environment carrying capacity are analyzed, the membership function is used to determine the membership degree of each single index, the evaluation result matrix is obtained with combination of Delphi method, and the expressiveness of evaluation method is improved by data discretization. According to the evaluation results of water resources environment carrying capacity, the change trend of water resource-environment carrying capacity in Harbin is analyzed, which provides basis for related research in future.