A credit card daughter card refers to a supplementary card that the cardholder can handle for family members or friends on the basis of the main card. Different from the main card, the holder of the auxiliary card is not the owner of the card, but an accessory of the main card. In terms of use, the secondary card can swipe the card to spend money, buy goods or enjoy preferential activities like the main card. The secondary card does not have the functions of applying for and modifying bill information, modifying credit limit and modifying password.

In addition, there are some other differences between credit card daughter cards. The bill of the secondary card is issued together with the bill of the main card, but the consumption details and repayment information of each card are separate. At the same time, the main card holder has the final decision, can set the amount of the secondary card, and receive all the expenses incurred by using the secondary card.

Finally, it should be noted that the holder of the secondary card must abide by the restrictions on the use of the primary card and the credit card repayment plan. The holder of the main card must supervise and manage the transaction of the secondary card, avoid the financial risks that may be caused by improper use of the secondary card, and ensure the good credit accumulation of the credit card account.