1, debit card is a harvest card, which is generally used for saving money and withdrawing money for transfer, and cannot be overdrawn. 2. A credit card is a credit card and can be overdrawn. Generally, it is a general card and a gold card. The maximum amount of Puka is 20000. The minimum amount of a gold card is 20000. The last day of each month is the billing date, and the 25th of the following month is the final repayment date. At present, there is no handling fee for withdrawal, but there is interest of five ten thousandths per day, and the maximum withdrawal is 2000 yuan per day. 3. Microfinance card is used for borrowing, so you can borrow it with you. If you have money to pay back, if you have no money, it is a limited loan.