Abstract: A guidance information retrieval apparatus includes a data holding unit (11) for holding guidance retrieval data including category data specifying categories in which retrieval targets are put, and substance data respectively specifying the substances of retrieval targets, another data holding unit (12) for holding update data including correction data for correcting category or substance data and additional data for adding new category or substance data to the guidance retrieval data, and a control unit (13) for, when the update data has correction data corresponding to category or substance data contained in the guidance retrieval data, outputting a category, in which a retrieval target corresponding to the correction data is put, or the substance of the retrieval target, and for, when the update data has additional data, outputting a category, in which a retrieval target corresponding to the additional data is put, or the substance of the retrieval target.