Circulating filtration sewage treatment device

The utility model discloses a circulating filtration sewage treatment device which comprises a sewage treatment box and a spiral conveying pump, a treatment inlet pipe is arranged on the sewage treatment box, a liquid inlet hole is formed in the inner wall of the top side of the sewage treatment box, the liquid inlet hole is communicated with the treatment inlet pipe, a sewage filter plate is fixedly mounted on the inner wall of the sewage treatment box, and the spiral conveying pump is communicated with the sewage filter plate. According to the sewage treatment device with the circulating filtration function, sewage needing to be treated and filtered is poured from a treatment inlet pipe, the poured sewage can be filtered from the position above a sewage filter plate under the inclination effect of a material guide plate, and the unfiltered sewage can enter a backflow collection box through a waste liquid backflow hole; the filtered aqueous solution can enter a collecting barrel on the filtering and collecti