1, try to spend by credit card. The frequency and amount of credit card spending should be as much as possible. Generally speaking, the total consumption for half a year should reach at least 30% of the quota, which can prove that cardholders often use credit cards and have high loyalty to banks. The bank credit card center will adjust the limit according to your credit card usage rate and repayment record.

2. Repay in full and on time to prevent late payment. After spending by credit card, make sure to repay in full and on time before the monthly repayment date. Once it is overdue, it will not only pay a high late fee, but also produce a bad credit record, which will affect the application for credit cards in the future. If you can't repay in time, you must call the bank's customer service hotline in advance, explain the reasons to the manual customer service, and apply for a few days grace period. At present, most banks can give a grace period of three days, of which Guangfa Bank and China Construction Bank can give a grace period of five days.

3. Take the initiative to apply for withdrawal after half a year. Under normal circumstances, after the credit card is used for half a year, the cardholder can take the initiative to apply for increasing the temporary credit limit or credit limit of the credit card. At present, there are many ways to apply for withdrawal, such as online, telephone, SMS and WeChat, depending on how the bank provides services.

4. The threat of canceling the credit card sometimes works. Use customer service and tell the customer service staff to return the card. It is possible that the relevant personnel will keep them by increasing the number of places.