As China's ecological civilization construction enters the critical stage and window period, baiyangdian water ecological civilization construction also encounters a more urgent and critical new chapter.The understanding of the ecological civilization of baiyangdian on the ideology of subject both human and water is directly related to the effectiveness of baiyangdian water ecological civilization construction.The transformation of the means of production and the mode of production, the lack of modern water ecological education concepts, and the lack of water environmental protection system,have caused the ideological and cognitive errors between man and water,between subject and object, hindering the construction of baiyangdian water ecological civilization. The construction of baiyangdian water ecological civilization should be guided by the green ecological idea of harmony between human and water, the green ecological road should be chose, water culture education should be carried out,water environment system ought to be implemented, and the new form of green ecological development of "production-living-ecology combination"should be explored so as to build the water ecological civilization of baiyangdian water harmony.