Complex ecological system for treating domestic wastewater of rural community

The utility model discloses a complex ecological system for treating the domestic wastewater of a rural community. The system mainly comprises a septic tank, an adjusting tank, a soil ecological treatment system, a horizontal flow constructed wetland system and a collector well, which are connected in series. The soil ecological treatment system sequentially consists of an impermeable layer, a gravel collection layer, a complex soil main reaction layer, a water distribution layer, a soil layer and a vegetable layer from bottom to top. The horizontal flow constructed wetland system sequentially consists of a bottom impermeable layer, a water distribution and collection and exhaust pipe network system, a substrate layer, an aquatic plant water body layer and a water body layer from top to bottom, wherein the substrate layer consists of a filler, a humus layer and a plant root system; and the water body layer consists of aerobic and anerobic microorganism populations of aquatic plants. A water outlet of the adjusting tank is communicated with the water distribution layer of the soil ecological treatment system. The gravel collection layer of the soil ecological treatment system is communicated with the horizontal flow constructed wetland system. A submersible pump is arranged on a pipeline of the collector well. The influence of environmental climate conditions on the complex ecological system is slight, the complex ecological system can be harmonized and unified with a broad rural environment, and the living environment of farmers can be beautified.