Abstract: According to many factors of water resources carrying capacity evaluation, from water resources, society, economy and ecology, it selects 15 indicators to establish a comprehensive evaluation index system.Based on the statistical data of Zhengzhou City from 2007 to 2016, it uses the subjective and objective methods combined with Analytic Hierarchy Process (AHP) and entropy weight method to calculate the index comprehensive weight. Finally, it uses the “modular plus” method to comprehensively evaluate the water resources carrying capacity of Zhengzhou City. The results show that the water resources carrying capacity of Zhengzhou City showed a downward trend from 2007 to 2013, and it rebounded in 2011 and stabilized after 2013.