宁夏六盘山引水工程方案的合理选择，受到自然、社会、技术经济和生态环境等诸因素影响，是一个多目标、多层次和多因素组成的复杂系统。本文用系统层次（权重）分析法和灰色理论对六盘山引水工程方案进行综合评价优选，为工程方案决策提供了依据。适当扩展后该方法也可用于其它水利水电工程的规划设计方案的综合评价和优选 The rational choice of the diversion project of Liupan Mountain in Ningxia is influenced by many factors such as nature, society, technology, economy and ecological environment. It is a complex system with multi-objective, multi-level and multi-factors. In this paper, the system level (weight) analysis and gray theory of the Liupan water diversion project to conduct a comprehensive evaluation of the optimal program for the decision-making provides the basis. After appropriate expansion, this method can also be used for the comprehensive evaluation and optimization of planning and design schemes of other water conservancy and hydropower projects