Abstract: In order to systematically evaluate the efficiency of industrial water resources in the Yellow River Basin and analyze its differences and influencing factors, the industrial water resources of nine provinces ( autonomous regions ) in the Yellow River Basin from 2014 to 2023 were studied. The super-efficiency EBM model considering undesirable output was used to evaluate the efficiency of static industrial water resources. The static spatial and temporal evolution was analyzed by the difference coefficient. Based on the efficiency evaluation results, the industrial pollution redundancy of the Yellow River was analyzed. The Malmquist (ML) index was used to dynamically decompose the water resources efficiency. The Tobit model tested by LLC and other methods was used to analyze the influencing factors of industrial water resources efficiency. The results showed that the average value of industrial water resources efficiency in the nine provinces ( autonomous regions ) of the Yellow River Basin was 0.783, showing an overall upward trend. The average value of the spatial evolution difference coefficient was 0.22, and there was a large gap in the level of industrial water resources efficiency between regions. The redundancy rates of COD, NH₃-N and volatile phenol in Sichuan Province were 0.73 %, 0.84 % and 0.03 %, respectively, and the redundancy level of pollutants was the lowest in the nine provinces (autonomous regions). The redundancy rates of COD in Ningxia Hui Autonomous Region, NH₃-N in Gansu Province and volatile phenol in Shanxi Province were the highest in the nine provinces ( autonomous regions ), which were 22.70%, 27.90 % and 45.90 %, respectively. The pollution control situation was severe. From the perspective of absolute quantity, the main driving forces for the improvement of the ML index were scale efficiency and technological progress, and pure technical efficiency had a negative moderating effect on the growth of the ML index. From the perspective of growth, the ML index increased from 0.95 to 1.12, and the water resources efficiency showed a dynamic growth. The technical efficiency, pure technical efficiency, and technological progress increased from 0.95, 0.81, and 1.00 to 1.00, 1.00 and 1.03, respectively. The contribution to the growth of water resources efficiency was strengthened, the scale efficiency decreased from 1.19 to 1.07, and the contribution to the growth of water resources efficiency decreased. Water resources endowment and industrial wastewater discharge intensity are the key factors restricting the efficiency of industrial water resources. The level of economic development, environmental regulation, technological innovation and water-saving measures are effective ways to improve the efficiency of industrial water resources.