Constructed wetland filler construction method

The invention relates-a constructed wetland filler construction method, and relates-the technical field of constructed wetlands, and the constructed wetland filler construction method comprises the following steps: S1, paving parapet walls on two sides of a foundation pit, and paving composite impermeable layers; S2, laying a first anti-blocking layer on the parapet wall close-the water inlet pipeline; S3, excavating a pipe groove in the anti-blocking layer, and placing a water distribution transverse pipe in the pipe groove and communicating with the water inlet pipeline; S4, enabling a second anti-blocking layer to continues to be laid; S5, laying protection plates on the upper surface of the anti-blocking layer, laying separation layers below the protection plates, performing biological filter layer backfilling, and laying the protection plates sequentially along with equipment advancing; S6, arranging a partition plate at the position, close to the water outlet pipeline, of the biological filter layer; S7