Aquaculture tail water treatment system and operation method thereof

The invention discloses an aquaculture tail water treatment system and an operation method thereof. The system comprises an ecological stabilization pond and a subsurface flow type constructed wetland; the ecological stabilization pond comprises a surrounding grid, a combined ecological floating bed, a plug flow aerator, a water pump and an ecological bank slope; the surrounding grid is fixed to the center of the ecological stabilization pond and is parallel to the long edge of the stabilization pond, the combined ecological floating bed and the plug flow aerator are arranged on the two sidesof the surrounding grid, and the water pump is arranged on the side close to the constructed wetland; the subsurface flow type constructed wetland comprises a water inlet channel, a water outlet channel and a wetland area, wherein the water inlet channel is connected with the water pump, the water outlet channel and the water inlet channel are distributed on two sides of the wetland area, and thebottom of the water outlet