Abstract: Ningdong energy and chemical industry base is developing rapidly relying on coal-based energy economy. However, due to excessive water use on the Yellow River and restricted by the red line of water use, the base is facing with severe economic development water resource constraints. Based on the analysis of the industrial status and water supply and consumption status of Ningdong base, this paper points out the major water problems existing in the base at present. Combined with the industrial development plan, a series of water-saving schemes are proposed for the coal, coal power and coal chemical industry to reduce the contradiction between water resources and economic development. We took 16 coal enterprises,14 coal power enterprises and 10 coal chemical enterprises in the base as samples. And calculated the water saving potential of each industry. The results show that: the water consumption of Ningdong base is close to the control index; the mine water has great development potential, and the recyclable water consumption is 30.41 million m3 by improving the utilization rate; the water-saving potential of coal development, coal power generation and coal chemical industry is 7.88 million m3,6.86 million m3 and 25.22 million m3 respectively, with a total water-saving potential of 39.96 million m3.