This paper establishes a dynamically optimized model of sustainable development for Hebei's water resource, water environment and social economy based on input/output table, and uses LINGO software to simulate the economic growth in different scenarios under dual constraints of water resource and environment. In the case of optimized scenario (comprehensive scenario), industrial adjustment, fiscal allowance for recycling water and southwaternorthtransfer, introduction of waste water processing technology can promote the sustainable development of Hebei's water resource, environment and economy. COD emission will be reduced by 10% in 2025 compared to the year of 2015. Economic growth rate will be 7.51% annually from 2007 to 2025. Industrial structure will be optimized to 12∶32∶54 in 2025 among the three industries. Water use in agriculture, industry, living and landscaping will be optimized to 59%, 21%, 12% and 8%. Underground water, surface water, recycling water and input water will be optimized to 63%, 16%, 7% and 13%. Hebei provincial government will provide fiscal allowance 7.813 billion RMB in water resource supply, of which 5.225 in newlyconstructed waste water plants, and 2.588 in recycling water piping.