Sewage treatment device

The utility model discloses a sewage treatment device which comprises a treatment box, a switch group consisting of a plurality of groups of switches is arranged on the front surface of the treatment box, a filling opening is formed in the upper end of the treatment box, a discharge opening is formed in the position, close to the bottom, of one side of the treatment box, and two groups of crushing rollers are symmetrically arranged at the bottom, butted with the filling opening, of an inner cavity of the treatment box; a filter frame is transversely and fixedly mounted in the inner cavity of the treatment box, a slag outlet is formed in the position, in butt joint with the outer side of the filter frame, of the other side of the treatment box, a pushing plate is slidably mounted at the upper end of the filter frame, a rotating shaft in butt joint with the lower end of the filter frame is rotationally connected to the inner cavity of the treatment box front and back, and a knocking rod is fixedly arranged on t