NOVELTY - Spatial construction system of aquatic plants for purifying water comprises a peripheral barricading, a peripheral ecological floating bed, a central barricading, a central ecological floating bed and an ecological jellyfish. The peripheral barricading is semi-enclosed. The inner part of the peripheral barricading is a working area separated from water. The central barricading is arranged in the peripheral barricading, where the inner part of the central barricading is a central area as the working area. The space between the central and the peripheral barricading is a peripheral area.    USE - Used as a spatial construction system of the aquatic plants for purifying water.    ADVANTAGE - The spatial construction system of the aquatic plants: quickly absorbs water nutrients and purifies water; is good for growth of zooplanktons; inhibits the blue-green algae by phagocytosis; and restores existing aquatic plant community.    DETAILED DESCRIPTION - Spatial construction system of aquatic plants for purifying water comprises a peripheral barricading, a peripheral ecological floating bed, a central barricading, a central ecological floating bed and an ecological jellyfish. The peripheral barricading is semi-enclosed. The inner part of the peripheral barricading is a working area separated from water. The central barricading is arranged in the peripheral barricading, where the inner part of the central barricading is a central area as the working area. The space between the central barricading and the peripheral barricading is the peripheral area of the working area. The peripheral ecological floating bed is arranged in the peripheral area. The central ecological floating bed and the ecological jellyfish are arranged in the central area. The ecological jellyfish comprises an anchor part for sinking into the bottom of the water. A fixing button is arranged on the upper part of the anchor part. A carrier is arranged for suspending in water. The carrier comprises a supporting framework. A biological carrier layer is arranged on the supporting framework. A fixed floating body is mounted on the edge of the supporting framework and an inflatable floating body is arranged at the center of the supporting framework to regulate the floatation by entering or exhausting gas. A cable pipe passed through the carrier is mounted at the center of the supporting framework or the inflatable floating body. The inflatable floating body is communicated with one end of the gas filling pipe to the exterior of water. A floating body controller is present for floating on water. A sleeve pipe of the gas filling pipe sleeve pipe, which is connected with the gas filling pipe, is mounted on the floating body controller. A fixing cable is arranged, where one end of the fixing cable is fixedly connected with the carrier, and the other end is connected sequentially with the floating body controller after passing through the fixing button on the anchor part and the cable pipe on the carrier.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the spatial construction system of the aquatic plants for purifying water.