Combined artificial landscape ecological floating island is a simple and effective water ecological restoration technology. By simulating the water purification principle of natural wetland, it can effectively remove the eutrophic substances such as ammonia nitrogen, nitrate nitrogen and total phosphorus in the water. It also has a good removal effect for COD and suspended particles in the water, which can transfer the nutrition of water and reduce the water Odor and eutrophication due to non circulation or lack of self-circulation.