Ecological floating island capable of treating polluted water

The utility model discloses an ecological floating island capable of treating polluted water. The ecological floating island comprises a floating bed, planting baskets and aquatic plants. The planting baskets are arranged on the floating bed, and the aquatic plants are planted in the planting baskets. The surface, in contact with water, of the floating bed is connected with stereoscopic immobilized microorganism bacterium agent adding device and is further connected with biological elastic solid fillers. According to the ecological floating island, agricultural wastes are used as matrix fillers, resource utilization of the wastes is facilitated, and the island is economical and practical; the agricultural wastes provide a carbon source needed by ammonia nitrogen degrading of denitrifying bacteria, degrading of pollutants is promoted, and the water quality purifying efficiency is improved; the stereoscopic addition mode that immobilized microorganism bacterium agents are added from the upper portion, the middle portion and the lower portion of water is adopted, enhancement of degrading of pollutants in the middle layer and the bottom layer of water and bottom mud is facilitated, the purifying efficiency of polluted water is improved, and the ecological floating island further has the advantage of being long in duration.