Abstract: In order to analyze the strategy selection in the cooperation process of supply chain finance between banks and e-commerce platforms under network effect, the evolutionary game models of both parties considering and not considering network effect are constructed respectively. The results show that when considering the network effect, as the transformation level of the effect reaches a certain level, it will have a certain substitution effect on the income sharing level of the e-commerce platform. In other words, compared with the case where the network effect is not considered, the e-commerce platform will choose a cooperation strategy with a lower level of revenue sharing. Therefore, improving the network effect in the cooperation can promote a longer-term cooperation between the two sides, while realizing the complementary advantages and reasonable allocation of resources.

Key words: network effect, supply chain finance, e-commerce platform, evolutionary game