When applying for a temporary credit line, CCB's credit card is comprehensively judged according to your various factors, so the failure may be due to the following reasons:

1. Insufficient time to use the card: According to the general banking regulations, you can only apply for a temporary increase in the limit after using the card for at least 3 months. At the same time, you need a health card to repay the loan on time.

2. Less consumption: Usually there are few types of consumption and the amount is small. Banks will think that your demand for quotas is not high and your spending power is insufficient.

3. There are overdue records: timely repayment is an important condition for applying for a temporary line. If it is overdue, the application for withdrawal is likely to be rejected.