Aocording to the water resource conditions and social environnent background of Foshan City, this paper selected 10 indexes from 4aspects, i.e.the present situation of water resources condition,the comprehensive benefits of water resources, water resources utilization efficiencyand sustainable utilization of water resources.The research focused on the evaluation of sustainable water resources utilization in Foshan by pro-jection pursuit model and artficial fish swarm algorithm.Research results show that the evaluation result accords with the actua resources in Foshan City. This paper put forward the corresponding opinion to relieve future water resources pressure.