NOVELTY - A eutrophicated artificial wetland treatment system comprises an artificial wetland pool body (1), a substrate layer (2), a wetland plant system (4) and a water distribution system. The water distribution system comprises a distribution pipe (5), a gravel water distribution region (6), a gravel water outlet region (7) and a water outlet channel (8). The substrate layer is located in the artificial wetland pool body. Two sides of the substrate layer are respectively the gravel water distribution region and the gravel water outlet region.    USE - An artificial wetland treatment system for purifying and restoring of eutrophicated water body with high turbidity and high nitrogen and phosphorus content.    ADVANTAGE - The system removes more than 80% ammonium ions and nitrogen in the eutrophicated water, and removes more than 90% total phosphorus and suspended solids.    DETAILED DESCRIPTION - An artificial wetland treatment system comprises an artificial wetland pool body (1), a substrate layer (2), a wetland plant system (4) and a water distribution system. The water distribution system comprises a distribution pipe (5), a gravel water distribution region (6), a gravel water outlet region (7) and a water outlet channel (8). The substrate layer is located in the artificial wetland pool body. Two sides of the substrate layer are respectively the gravel water distribution region and the gravel water outlet region. The upper portion of the substrate layer is paved with a covering layer (3) whose surface is the wetland plant system. One side of the gravel water distribution region is provided with water distribution pipe. the gravel water outlet region is connected with the water outlet channel. The substrate layer is made from steel slag and dry slag at a volume ratio 4:1 to 6:1.    DESCRIPTION OF DRAWING(S) - The drawing shows cross-sectional view of an artificial wetland treatment system.    Artificial wetland pool body (1)    Substrate layer (2)    Covering layer (3)    Wetland plant system (4)    Distribution pipe (5)    Gravel water distribution region (6)    Gravel water outlet region (7)    Water outlet channel (8)