Aimed at the problem of method of determining weight value in water resources utilization evaluation which is greater influenced by subjectivity of experts, the paper proposed the method of determining weight value based on cloud model. The cloud model was applied in water resources utilization evaluation by taking Aksu region for example. The results showed that the comprehensive intensive land use value of Aksu region is 0.39 which means low level of water resources utilization. In the end, this paper summarized the advantages of using cloud model by presenting a more objective outcome and more easy-to-achieve algorithm. The application of cloud Model is conducive to the scientific evaluation of water resources utilization so as to offer the basis for the development and utilization of water resources in Aksu region.