The invention discloses a hanging wheel component of an aluminium door, belonging to the field of hardware fitting manufacturing of architectural ornaments, wherein a hanging pedestal consists of a U-shaped hanging panel and a double-groove outer box; and the double-groove outer box is riveted to the U-shaped hanging panel. By cooperation of a double-hanging pulley, a straight threaded rod and a sliding inner panel, the U-shaped hanging panel is assembled in a vertical frame of an aluminium door leaf, and the aluminium door leaf is hung in an upper rail of the aluminium door by the hanging pedestal and the double-hanging pulley, thus pushing the aluminium door to slide smoothly, conveniently and freely. The hanging wheel component disclosed by the invention has the advantages of original design, rational structure, easiness in processing, and low production cost. Meanwhile, the hanging wheel component comprises the double-hanging pulley, the sliding inner panel, etc., and is characterized in that the hanging pedestal consists of the U-shaped hanging panel and the double-groove outer box by laminating; a rectangular lug boss and a riveting hole are arranged on a plane of the double-groove outer box; arc chutes are positioned at both sides of the double-groove outer box; the two arc chutes at the same end are provided with inner screw threads respectively; and screw holes are positioned on both vertical faces of the U-shaped hanging panel.