Many cardholders feel that it is useless to get a zero-line credit card, so they want to cancel it. In fact, for Xiaobai, this zero-line credit card is very useful. Even if the credit line is zero, it can still be used for a long time. Of course, if you want to raise the amount quickly, you have to master certain skills. Let's take a look at it. Zero-line credit cards can enjoy some benefits of the bank's credit cards, such as discounts on tickets purchased by swiping cards in designated cinemas and discounts on spending by swiping cards in designated shopping malls and restaurants. However, you must deposit money before spending, which is essentially equivalent to a debit card, and if you can't swipe it for a specified number of times or amount every year, you will be deducted from the annual fee ranging from tens of yuan to hundreds of yuan. According to the regulations, the bank will automatically adjust the credit limit of the cardholder to 5 yuan if the customer reaches 5 yuan within three months after getting this card. After that, the cardholder will continue to spend and repay on time, and the overdraft limit will continue to increase. So you can spend more on credit cards, so your credit card limit will increase. There are some things to pay attention to when swiping your card. 1. The frequency should be high: swipe your card anytime and anywhere, including buying cigarettes and drinks, etc. The more you swipe, the more you swipe your card, the easier it is to raise the amount and the less easily it is controlled by the wind. 2, the amount of credit card should be consistent with consumption habits: never have a big and low credit card amount. 3, try to brush with points: so that banks have money to earn, and the chances of raising the amount will increase a lot. 4, to do some staging: occasionally brush more than a few hundred yuan, and then do a staging, give the bank some money to earn, and it will be much easier to raise the amount. 5. Different shops: Try to choose different types of shops to spend credit cards every time you brush. 6, cherish the credit, must not appear overdue. If the final repayment date is really not up, you can call the bank and give you a few days' delay. You must find a way to return the money during the suspension period given by the bank.