The pin code of Chinese visa refers to the personal identification password. It is a code introduced to improve the payment security of credit cards and prevent the leakage of credit card information.

Some POS terminals in shopping malls or businesses choose to use pin codes to verify transactions when helping customers make card transactions. When asked to enter a pin code, the relevant user can enter the card's transaction password.

The Chinese visa pin code is usually a 3 or 4-digit number printed on the credit card. The printing position will be different for different types of cards.