By the impact of variety of industrial wastes,domestic sewage,agricultural chemical emissions,deterioration of river water pollution problems have been becoming environmental dilemma in many areas,which has brought a lot of negative impacts to peoples daily life.As the primary producers in aquatic ecosystems,the aquatic plants not only purifies water and promotes recovering degradation of aquatic system,but also plays a key role for maintain a virtuous cycle in aquatic ecosystems and plays an important role in enhancing the urban landscape.