The invention relates to a pressing screw (5) for a fruit and / or vegetable food pressing apparatus (1), comprising a body provided with at least one main helical thread extending around a rotation axis (X). According to the invention, the pressing screw (5) comprises at least one arm (24, 25) which extends radially with respect to the axis of rotation (X), said arm (24, 25) having at its end distal a fin (26, 27) configured to extend to a lower body portion away from the body, said fin (26, 27) including at least one cleaning member (28, 29). The invention also relates to an apparatus (1) for pressing fruits and/or vegetables, comprising a receptacle (3), a filtering drum (4), a pressing screw (5), and means for driving in rotation of the pressing screw (5) around a mainly vertical axis of rotation (X), in which the pressing screw (5) conforms to the aforementioned characteristics.
