Abstract: DPSIR is a conceptual model of evaluation index system, which is widely used in environmental systems. It has been developed as an indicator system to measure the environment and sustainable development. The interaction between human and environmental system is mainly viewed from the perspective of systematic analysis. Taking Yichang, Hubei for example, we constructed an evaluation index system of "water resource-social economy-ecological environment" for water resources carrying capacity based on DPSIR model. We calculated evaluation weight for each criterion using AHP method and proposed a Logistic logarithmic calculation model based on Logistic equation; meanwhile, we introduced sustainable development evaluation indexes, and estimated the sustainable social and economical development and the virtuous conditions for the development of social economy and ecological environment. We also carried out comprehensive evaluation on carrying capacity of water resources and its developing sustainability. The results showed that comprehensive carrying capacity is in a healthy state between 2005 and 2015, and social economy develops sustainably except for 2011, 2013 and 2015. Social economy and ecological environment developed in a sound way over the years other than the year 2013. It is suggested that while tapping the potential in social and economic development, we should also promote water resources protection and ecological environment governance.