To reduce monitoring staff and reduce cost by automating monitoring, a card game monitoring system includes a wirelessly communicating, identifying information recording device embedded in a card for recording information for identifying itself; identifying information reading devices provided at a card takeout slot of a card distributor in contact with the card at the start of a game and in card distribution areas of a card game table in contact with the card in the middle of the game, for reading by wireless communication the identifying information; a control device for monitoring consistency between the identifying information read with the identifying information reading device at the start of the game and the identifying information read likewise in the middle of the game by comparing both pieces of the identifying information; a notifying lamp for issuing a notice of information inconsistency, if any; a recording device for recording identifying information and results of monitoring; and an invalidating device for invalidating the identifying information of retrieved cards.