At last , this paper combines the reasonable distribution of water resources with social economy development and ecology environment protection . from the angle of system analysis , the multi - objective analysis model , macroeconomy model , optimization and simulation water system model are presented . macroeconomy water resource system is optimized and simulated from different time with methods of combining optimization with simulation technology and quantitative with qualitative analysis 最后将水资源合理配置、社会经济发展、生态环境保护紧密结合起来,从系统分析的角度出发,建立了王益区水资源合理配置多目标分析模型、宏观经济模型和水资源系统优化模拟模型,用优化与模拟技术相结合、定量与定性分析相结合的方法,从不同时间层次上对宏观经济、水资源系统进行了优化和模拟。