According to Foresight Industry Research Institute's "Analysis Report on the Development Prospect and Investment Forecast of China Catering Industry from 2116 to 2121", the biggest advantage of cooperative promotion between catering industry and banks is that each member of the joint body can obtain greater promotion effect at less cost, and joint promotion can sometimes achieve the goal that cannot be achieved by individual promotion. The catering industry can cooperate with banks to know which bank's card is swiped when customers swipe their cards, and then they can cooperate with a bank to promote sales. Let both sides of the joint promotion be exposed to the eyes of the target consumers to the maximum extent, give full play to the promotion function, and finally get the ideal effect.