Abstract: Scientific and reasonable evaluation of water resources allocation is of great significance for realizing efficient utilization of water resources and solving water shortage. Based on the entropy weight method and the variable coefficient method, by using the thought of Game Theory, the TOPSIS evaluation model of the combination weight of Game Theory is constructed. This model is used to evaluate the water resources allocation scheme in a certain area. The evaluation results are compared with other models'results. The results show that the model is effective and feasible in the evaluation of water resources allocation scheme, and the evaluation results are scientific, reliable and reasonable.