Abstract: Provided are a card benefit providing system and method for automatically adjusting card benefits for each customer by applying card usage information, the card benefit providing system including: a benefit managing server (100) including: a benefit control unit (110) controlling, in an integrated manner, providing of card benefits according to card usage history information in connection with a payment action using a card possessed by a customer who desires to receive an automatic card benefit adjusting service; and a payment information database unit (120) storing and managing the card usage history information according to each customer in a database.