to target the fundamental water science and cutting edge technologies in the nexue of water-energy-humen health at global or regional magnitudes. to reveal the newly emerging scientific originals inside water circulation systems. to be devoted to multidisciplinary research combined with water ecology, bio-functional molecules and genes, nano materials, new energy and big data, etc. to acquire new knowledge, to develop new technologies and to promote its application and commercialization. to make effort to solve the global and regional environmental issues, to contribute to sustainable development of the environmental protection industry.