1). First of all, we should have a comprehensive understanding of the functions of bank credit cards, and we should know that different cards have different offers. For different groups of people, we mainly recommend relevant offers and functions. (2) Understand the characteristics, advantages and disadvantages of competitors' credit cards, especially the disadvantages, and compare them with our own cards. (3) You can make use of your own network, such as knowing the boss of a company and the financial controller of a company, and it is easier to sort out credit cards. (4) Investigate the areas not covered by the Bank's credit cards, and further promote them by sweeping the floor, setting up stalls and using relationships. (5) giving gifts by card, etc. We should urge the masses to handle it, fully mobilize family, friends and social relations, and let everyone we know get a card.