At present, it is not stipulated that the same bank can handle multiple credit cards, and the same bank can apply for multiple credit cards, but the credit limit is shared, that is, the credit card with the highest limit is the highest limit.

In the case of holding multiple credit cards from the same bank at the same time, the credit lines of multiple credit cards are the same. Generally, credit cards with low credit lines enjoy the available credit lines of credit cards with high credit lines.

For example, if a person holds three credit cards of a bank with a credit limit of 30,000 yuan, then these three cards will use a credit limit of 30,000 yuan. When one card overdraws 4,000 yuan, the other two cards can only overdraw 26,000 yuan.

Matters needing attention in expanding data

1. When entering the password, be careful to cover it with your hands. If there is any abnormality in the password protection cover and card entry protection slot of ATM, please do not use it for safety reasons and notify the bank immediately;

2. In order to prevent fake ATM machines, customers should try to choose self-service banks with obvious signs and use ATM machines under the video surveillance of banks;

It is best to store the bank card and ID card separately. Don't lend your bank card to others, and don't disclose your bank card number and password at will.

4. When spending by credit card, don't let the bank card leave sight, pay attention to the number of times the cashier swipes the card, and check whether the amount on the shopping list is correct and whether it is my card when getting the shopping list and card;

Official Website of China Construction Bank-Credit Card

Hayes Business Daily-Multiple credit card lines of the same bank need to be shared.