The decrease in the credit card limit of CITIC may be due to overdue, cashing, long-term non-use and other reasons. If you don't use downgrade for a long time, users are advised to spend more by credit card; If it is overdue, the user needs to repay the loan on time, maintain a good habit of using the card and stop overdue; If the amount is reduced due to suspected cashing, the user can call the bank customer service, provide evidence of normal consumption flow, and request to restore the amount.