Abstract:Abstract:Hydrophyte plays an important role on multi filed research. In order to show the development of hydrophyte research in recent year clearly, this article contrasted the application of different hydrophytes and the effect on environment management,and summarized the important role of hydrophytes in bird inhabit and migration and the application of new technology in the research of hydrophytes, and showed the progress in the study of hydrophytes. Detailed definition of aquatic plants was discussed.The water plants as a more effective treatment method of sewage was also summarized.The review can supply a reference for the further development of hydrophyte ecology.