1. What is a debit card? Debit card refers to a bank card issued by a bank that requires deposit (or withdrawal) before consumption and has no overdraft function. Debit card has the functions of transfer settlement, cash deposit and withdrawal, credit card consumption and so on. Many value-added services such as fund trading, foreign exchange trading and payment have also been added. Second, what is a credit card? Credit card refers to the credit payment tool provided by card issuers to their customers with the functions of consumer credit, transfer settlement, cash deposit and withdrawal, etc. According to the consumer credit line granted by the card issuer, cardholders can directly spend money at special merchants or deposit and withdraw money and transfer money at designated institutions and places, and repay the principal and interest of consumer loans to the card issuer within the specified time. Credit cards are divided into credit cards and quasi-credit cards. Credit card refers to the credit card that the card issuer gives the cardholder a certain credit limit, within which the cardholder can spend first and then repay. Quasi-credit card refers to the credit card that the cardholder must deposit the down payment according to the requirements of the card issuer, and when the balance of the reserve account is insufficient to pay, it can be overdrawn within the credit limit stipulated by the card issuing bank. 3. What's the difference between a debit card and a credit card? 1, debit card deposits have interest, but credit cards don't. 2. Credit cards can cycle credit lines. China's card-issuing banks generally give cardholders an interest-free period of up to 60 days, and the credit limit of cardholders is approved according to their credit status. Debit cards have no revolving credit limit. 3. Credit cards are unsecured and unsecured loans. Debit cards are not. 4. Credit cards are usually short-term, small-sum, non-designated credits, while debit cards are always available. 5. In addition to credit loans, credit cards also have the functions of cash deposit and withdrawal, transfer, payment and settlement, collection and payment, deposit and withdrawal, bank withdrawal, online shopping and so on. Debit cards can only be used for deposit and withdrawal, transfer and online shopping. Fourth, how to distinguish between debit cards and credit cards? 1. The words "debit card", "savings card", "ATM card", "Maestro" and "Cirrus" are clearly marked on the card face as debit cards. Credit cards have clear words "credit card" and "debit card" on the card surface; 2. Credit cards are all business cards, and the front of the credit card has the Chinese pinyin of the cardholder's name, and some have the gender of "Mr" and "Ms". Debit cards are prefabricated cards except VIP cards, and the cardholder's name is not pinyin; 3. The credit card number is embossed. Debit cards are printed and embossed; 4. Debit card numbers are generally 16 or 19 digits, and credit cards are generally 16 digits; 5. Most debit cards do not have laser anti-counterfeiting marks (both Shanghai Pudong Development Bank debit cards and Minsheng Mini Constellation debit cards have laser marks), and credit cards are required. (UnionPay is the pattern of the Temple of Heaven, with a square reflective film); 6. Generally, there is no seven-digit check code on the back of debit card (except Shanghai Pudong Development Bank), but there is a set of 4-3 special combination digits on the back of credit card (the special transaction code of the last four and three digits of the card number); 7. Customer service telephone number on the back of the card, debit card starts with 9, credit card starts with 4 and 8, and the service hotline of some credit cards is the same as that of the issuing bank; 8. On the back of the credit card, there are words like "This card is valid only after signature" and "It is invalid without signature", while on the back of the debit card, there are only words like "Signature of the cardholder". As a kind of card with saving function, debit card pays certain interest on the funds stored in the card. Credit card is a kind of bank card, which is used as an associated legal person to make consumption and provide cardholders with a certain amount of funds for consumption and timely repayment.