The validity period of a credit card is clearly marked on the front of the credit card, usually under the credit card. The standard format is "xx/xx", one month before and one month after. For example, 03/22 is displayed on the credit card, indicating that the cardholder's credit card is valid until March 2022.

If the credit card is reissued with the same validity period as the original one, the credit card can no longer be used after the validity period expires, and the cardholder needs to go to the bank outlet to replace it. It is best to replace the new card before it expires, so as not to affect the normal use of the credit card.