In order to evaluate the water consumption quota of thermal power industry in Yellow River provinces, the evaluationmodel was established based on multi-level grey relational theory. Model structure, evaluation index and determination of relatedparameters were given. The Model was used to evaluate water quota of thermal power industry according to relevant national andindustrial standards, access conditions and measured data. The evaluation results show that the water quota of Shanxi Province isrelatively more reasonable, followed by Inner Mongolia Autonomous Region, Shandong and Gansu Provinces.