Fuel filter filtering element, rotary mounting type fuel filter and plastic housing fuel filter

The invention discloses a fuel filter filtering element which comprises a filtering element shell which comprises a medium supporting part, a taper part and an in-out opening part which are connectedin sequence, and the cross section of the taper part is in a horn shape; a filtering body is arranged on the inner surface of the medium supporting part in an interference sealing fit manner, the filtering body is formed by tightly winding two layers of filtering media, the structures of the two layers of filtering media are the same, and the two layers of filtering media comprise flat-plate filter paper and corrugation filter paper; one end of the corrugation filter paper in the width direction and is flush with the flat-plate filter paper, an interval is reserved between the other end of thecorrugation filter paper and the end of the flat-plate filter paper, and a glue solution pasting layer is arranged at the interval; the closed end of the first layer of filtering medium is flush withthe opening end of the second layer of filtering medium; and an anti-flameout structure is arranged on the position, where the taper part is located, of the filtering element shell. By means of the fuel filter filtering element, engine flameout can be prevented, and the service life of the fuel filter filtering element is prolonged.