A card processing system comprising: a card processing apparatus including: a conveyance device for conveying a plurality of cards carrying identification information; a discrimination device for discriminating the cards conveyed by the conveyance device; a barcode reader for reading the identification information of the cards discriminated by the discrimination device; and a plurality of cassettes (28b through 33b) for sorting and containing the cards according to the results of discrimination of the discrimination device; the system characterized by further comprising: an external barcode reader for reading the identification information of a plurality of storage containers storing the cards taken out from the plurality of cassettes (28b through 33b) and carrying the identification information; a memory device for storing the identification information of the cards read by the barcode reader, the information of the cassettes (28b through 33b) storing the cards carrying the read identification information and the identification information of the storage containers read by the external barcode reader; an input device for inputting extraction information of the card to be extracted from the storage containers; and a specification device for specifying the storage container containing the cards carrying the identification information corresponding to the extraction information input by the input device according to the information stored in the memory device. a card processing apparatus including: a conveyance device for conveying a plurality of cards carrying identification information; a discrimination device for discriminating the cards conveyed by the conveyance device; a barcode reader for reading the identification information of the cards discriminated by the discrimination device; and a plurality of cassettes (28b through 33b) for sorting and containing the cards according to the results of discrimination of the discrimination device; a conveyance device for conveying a plurality of cards carrying identification information; a discrimination device for discriminating the cards conveyed by the conveyance device; a barcode reader for reading the identification information of the cards discriminated by the discrimination device; and a plurality of cassettes (28b through 33b) for sorting and containing the cards according to the results of discrimination of the discrimination device; the system characterized by further comprising: an external barcode reader for reading the identification information of a plurality of storage containers storing the cards taken out from the plurality of cassettes (28b through 33b) and carrying the identification information; a memory device for storing the identification information of the cards read by the barcode reader, the information of the cassettes (28b through 33b) storing the cards carrying the read identification information and the identification information of the storage containers read by the external barcode reader; an input device for inputting extraction information of the card to be extracted from the storage containers; and a specification device for specifying the storage container containing the cards carrying the identification information corresponding to the extraction information input by the input device according to the information stored in the memory device. an external barcode reader for reading the identification information of a plurality of storage containers storing the cards taken out from the plurality of cassettes (28b through 33b) and carrying the identification information; a memory device for storing the identification information of the cards read by the barcode reader, the information of the cassettes (28b through 33b) storing the cards carrying the read identification information and the identification information of the storage containers read by the external barcode reader; an input device for inputting extraction information of the card to be extracted from the storage containers; and a specification device for specifying the storage container containing the cards carrying the identification information corresponding to the extraction information input by the input device according to the information stored in the memory device.