The utility model discloses a combined type ecological floating bed. The combined type ecological floating bed comprises a floating bed framework, floating bodies and aquatic plant, wherein the floating bodies are fastened at the periphery of the floating bed framework, a plant straw filler is arranged in the floating bed framework, and the aquatic plant is cultivated on the floating bed framework. When the combined type ecological floating bed is adopted, root systems of plant can be prevented from suspension growth, adsorption quantity of microorganisms is increased, absorption and assimilation of the ecological floating bed to pollutant are improved, and biodegradability of water body can be improved.