Abstract: A credit card management device is provided with a first storing unit which stores transaction forms, a second storing unit which stores a credit limit corresponding to the transaction form, a unit which receives the credit card identification information and store identification information together with a credit amount, a unit which extracts the transaction form corresponding to the store identification information from the first storing unit, a unit which extracts credit card identification information and a credit limit corresponding to the transaction form from a second storing unit, and a unit which makes a determination as to whether or not the credit amount is within the credit limit, thus, in an attempt to use a credit card through the Internet or the like, it is possible to use a card through the network without qualms.