The credit card limit is finally issued by the system based on the comprehensive evaluation of various information provided by customers, and there will be many reference factors, such as the customer's work nature, education, income, personal stability, personal social credit, the use of other financial products, etc., so the final approved limit may be different from the cardholder's expectation. Generally, according to the credit card quota approval rules, the credit card with low grade has low initial quota, and the credit card with high grade has high initial quota.