A card processing device with which a user operates a card by hand may include a card-inserting section at which the card is inserted; a card-storing section structured to store the card while a rear end portion of the inserted card is exposed from the card-inserting section; a reading section structured to read recorded information on the card stored in the card-storing section; a first detecting section structured to detect that the card is inserted to the card-storing section from the card-inserting section; a second detecting section, arranged on the farther side than the first detecting section in the inserting direction of the card, structured to detect that the card is inserted; and a status-monitoring section structured to detect fraud from the relation of the detections of the card at the first detecting section and the second detecting section.