1. If you hold two or more credit cards (personal card master cards) issued by the same bank, each credit card has a credit limit, and the highest credit limit is your total credit limit. The sum of all credit card limits that you can use in our bank shall not exceed the total credit limit.

2. At the same time, the main card and the auxiliary card of the credit card also share the same credit limit. For example, the credit line of the main card is 20000, and the consumption of the secondary card is 10000 today, so the credit line of the main card is only 10000.

3. As for the credit line, no matter how many cards the same bank has, they all share the credit line. However, if consumers really have higher demand, they can call the customer service phone of this bank, apply for a high amount, or apply for a credit card from another bank. There is no shared credit line between different banks.

Credit card limit, also known as credit card available limit, refers to the maximum amount of credit card you can use, including credit limit (that is, the maximum overdraft limit of credit card) and the amount deposited in credit card.

The amount of any credit card depends on the effective income provided by the individual during the application process and the value of the asset guarantee. The credit limit of a credit card is positively related to the applicant's income and secured assets, that is, the higher the income and secured assets, the higher the credit limit. Therefore, the applicant must provide proof of income and statement of asset guarantee. Asset guarantee includes fixed assets such as real estate and automobiles, as well as current assets such as savings and bonds.

Source: Credit Card Limit Baidu Encyclopedia