1. Age limit: Many banks generally handle cards from 18 to 60, but some credit cards have special restrictions. For example, banks issue youth cards. For example, the young card of China Merchants Bank can only apply for customers under the age of 30, and the Y-power card applicant of Bank of Communications must be between 18 and 35.

2. Gender restriction: Many banks have launched women-only credit cards, which only women can handle, but men can't, such as Minsheng Bank Women's Flower Credit Card, China Merchants ELLE Co-branded Credit Card, ICBC Glory Credit Card, Guangfa True Love Card, CITIC Magic Card and so on.

3. Occupation restrictions: To apply for a credit card, you must have work income, but banks also have requirements for occupations. Generally, you need a stable career, not a high-risk career. For example, insurance salesmen, mobile vendors, entertainers, security guards, front-line operators, workshop workers, etc. It is difficult to apply for a credit card.

4. Income restriction: generally speaking, the income should not be lower than the local average income level, and basically it should be more than 3,000 yuan. Some banks stipulate that it must be after-tax income, while others are not so strict. You'd better consult the next bank before you apply for a card.

5. Credit limit: There are two aspects. One is the total credit line. The total credit limit before issuing the card should not be too high, otherwise the card will be rejected because of its repayment ability. One is a credit institution. Usually, if he has five bank credit cards in his name, his application to other banks, especially China Construction Bank, will be rejected.

6. Card number limit: Some banks can handle multiple credit cards, and some banks have restrictions on the number of cards. For example, there can only be 9 transportation cards, 40 Everbright cards and 5 valid cards. If you want to handle more cards, you need to cancel them first.