Nature-imitated wetland system and purification method thereof

The invention discloses a nature-imitated wetland system and a purification method thereof. The nature-imitated wetland system comprises an artificial ecological channel, an artificial plant ecological pond and an artificial matrix ecological pond; the artificial ecological channel comprises a flow channel and a valve arranged on the flow channel; the artificial plant ecological pond comprises a plant pond, a water inlet and a water outlet, wherein the water inlet and the water outlet are arranged on two opposite sides of the plant pond; the water inlet is communicated to the flow channel; theplant pond comprises a shoal area and a deep water area, emergent aquatic plants are planted in the shoal area, and the planting density is 10 to 30/m ; submerged plants are planted in the deep water area, the submerged plants cover 30 to 50% of the water surface area of the plant pond, and the biomass of the planted submerged plants is 2000 to 9000 g/m ; the artificial matrix ecological pondis communicated with the wate