Abstract: THe indicator system and assessment methods for sustainable utilization in relation to water resources are one of core subjects of the sustainable water resources management.Based on the complex system theory,we define water resources,society-economy and environment as a complex system.With the Bossel's orientor indicators framework of sustainable development,the indicator system for regional water resources is established.In the assessment process,the maximum deviation sum of squares from the reference state,which is based on the Bossel's evaluation criteria,is used to calculate the weight value by means of systematic comprehensive assessment method.And the comprehensive assessment value model and the development potential model of RSWRS are presented.The models are applied to the assessment of the sustainable water resources in Shaanxi Province.