Abstract: This paper presents a method for investigating the industrial water in refining and chemical enterprisest:based on the water use system, characteristics and regions, industrial water should be classified. and mathematical statisties should integrate with energy consumption and overall economic benifits. A practical and optimal water use plan was drawn up based on equilibrium analysis of the full industrial water management process and comprehensively evaluated in technology, investment benefits and enviroment protection, so as to scientifically use industral water.