The available credit card limit is zero, and the possible situations are as follows: \x0d\ 1, and a low credit limit means that the credit card is zero; \x0d\2。 The credit line has been fully used and not repaid, and the available credit line is zero; \x0d\3。 Credit cards have bad records, which may be banned by banks, such as long-term overdue or cashing out, and being blocked by banks.