The utility model relates to a self-cleaning rotational flow sewage filter, which is characterized in that: the top of a body is connected with a housing, the internal bottom of which is connected with an inner sleeve; an upper bearing board is connected to the inside of the inner sleeve; a lower bearing board is connected to the inside of the body by a position corresponding with the upper bearing board; a principal axis pipe is positioned inside the bearings of the upper and lower bearing board; the bottom end of the principal axis pipe is connected with a sewage discharge pipe device; a drive mechanism is connected on the section of the principal axis under the body; the top end of the principal axis pipe is connected with a cylinder separation device, which can rotate inside the housing as the principal axis moves; a rotational flow separation device, on the top of which the filter device is disposed, is suspended inside the cylinder separation device; the top of the housing is connected with a top cover, on which a water inlet pipe device is arranged. The utility model is not only reasonably designed but also simply structured. The filter has the advantages that the utility model adopts the electrical motor drive the sewage to conduct the rotational flow separation, and at the same time, filters the separated sewage so as to realize the continuous recycle water supply disposal function of separation, filtration and reuse of the sewage, and other advantages.