Abstract: In order to dig the potential of social media in dealing with rumors based on crowdsourcing in crisis, comprehensively discuss the influence of rumor-refuting information dissemination methods in social media on public acceptance, public information behavior, and rumor-refuting effects in crisis event, based on the classical information acceptance model and the research results of social media information behavior, this paper constructs a two-stage model reflecting the rumor-refuting effect of rumor-refuting information in social media, then collects data and uses multiple regression method to verify the model in the context of Novel coronavirus pneumonia public health emergency. The results show that media abundance, media synchronicity and social clue strength have a positive effect on improving the public’s acceptance of rumor-refuting information. High acceptance will enhance the behavior of message deliberation, such as forwarding, commenting and confirmation seeking, thus helping improve the effect of rumor refutation. According to these conclusions, some suggestions are proposed for the management organizations and social media platforms to improve the rumor-refuting effectiveness of rumor-refuting information in social media.

Key words: rumor-refuting effects, information dissemination methods, social media, crisis event