Modularized artificial wetland treatment device

The utility model discloses a modularized constructed wetland treatment device which comprises a water distribution channel, a plurality of constructed wetland subunits and a water outlet channel, the plurality of constructed wetland subunits are sequentially arranged front and back, the water distribution channel and the water outlet channel are respectively arranged at the left end and the right end of each constructed wetland subunit, and the water distribution channel is communicated with the water inlet end of each constructed wetland subunit. The water outlet channel is communicated with the water outlet end of the constructed wetland subunit, and the constructed wetland subunit can control the amount of water entering from the water distribution channel. A traditional constructed wetland system is divided into a plurality of constructed wetland subunits which are arranged in parallel, and each constructed wetland subunit can control the amount of water entering from the water distribution channel, so t