To prevent a card from being inserted erroneously for sold-out food.

This restaurant card selling system where plural card terminal machines 11 are arranged along a counter providing various foods, information stored on an applicable purchased card is read each time the purchased card 18 is inserted into a card insertion slot 14 provided in each card terminal machine, sales registration for a food registered with the card terminal machine is executed and a host device 12 accumulates each sales data undergoing sales registration in each card terminal machine is provided with a sold-out card where sold-out information is stored on a part inserted into the slot 14 while it is inserted into the slot 14 and the sold-out information is written on a part exposing from the slot 14 and a sold-output processing means which is provided in each card terminal machine and transmits the sales data undergoing sales registration in the applicable card terminal machine to the host device when the information read from the card inserted into the slot 14 shows the sold-out information.