This paper summarizes the treatment experience of eutrophication by domestic and foreign scholars. At the same time, it summarizes the basic methods to govern lakes; Based on this, we advance the basic principles of urban landscape lakes: At first, we must fully investigate lake pollution source, evaluate its pollution ecological risk; Secondly we should put forward possible measures and choose the scheme for implementation, and finally complete the real-time dynamic monitoring, establish long-term supporting policies and treatment mechanism, to ensure that the pollution of lake continues to develop in the direction of health.