Before organizational change, there are unconfirmed gossip, rumors and other informal information about the change.Our research constructs the theoretical dissemination mechanism of informal information in the organizational change context, assuming that positive and negative informal information can promote employees to further disseminate information through social entertainment and information verification motivation, and negative information is more likely to be disseminated.Based on the empirical analysis of 324 samples from 71 teams, we find that the reason why employees disseminate such informal information is not the good or bad nature of information but the uncertainty brought by the information before the change: the positive and negative informal information before organizational change promotes information dissemination by enhancing employees' motivation to verify the information, and there is no significant difference in the effect of information nature on information dissemination; the positive and negative informal information before the change significantly enhances employees' social entertainment motivation, but not found to lead to further dissemination of informal information.