Sewage filter sheet and sewage filter

The invention discloses a sewage filter. The sewage filter comprises a main body and two filtering membranes which are distributed on two sides of the main body and used for filtering sewage, whereina middle through hole is formed in the middle of the main body, a suction end and a suction end are arranged at the two ends of the main body respectively, a communication hole, a cylindrical throughhole, a convex table and a concave groove are further formed in the suction end, the cylindrical through hole penetrates through the suction end, the communication hole is communicated with the cylindrical through hole and the middle through hole respectively, the convex table and the concave groove are distributed on the two sides of the cylindrical through hole, the two filter membranes and themiddle through hole form a flowing space, and sewage flows into the flowing space along the suction end and then flows out along the suction end. The heated sewage flows into the flowing space along the suction end, the sewage