Abstract:Quantitative analysis of the control index “Three Red Lines”in the strictest water resources management system in Weixin coal electricity integration power plant in Yunnan Province were made, selecting the total water consumption of project and utilization rate of river basin water resources to analyze the water consumption control index, selecting the designed water consumption rate, new water utilization rate, water intaking indicators, whole plant water reuse rate, water cycle utilization rate, domestic water of plant, etc. to analyze the water consumption quota index, selecting the water quality compliance rate of water function area to analyze the pollutant carrying capacity index. The results show that the water resource exploitation and utilization rate of the basin is 7. 4% after the completion of the project; as for the water use efficiency index, the designed water consumption rate is 0. 51 ~0. 61m3/(s. GW), new water utilization rate is 100%, water intaking indicator is 0. 58m3/(s. GW), whole plant water reuse rate is 98. 3%, water cycle utilization rate is 98. 7%; the project requires all the returning water in the power plant be recycled, with sewage zero discharged and regional water quality reaching class II.