[Purpose/significance] During the period of public health emergencies, a large number of Internet rumors have produced and they have adverse effects on society and people's lives. The construction of multi-angle rumor refutation effect evaluation index system can provide corresponding guidance for the governance of Internet rumor in public health emergencies in China.[Method/process] In this paper, the evaluation index system was constructed from four dimensions of the main feature, text features, audience feature and background feature, and the index weight was analyzed by the combination of AHP and fuzzy comprehensive evaluation. The feasibility of the evaluation index system was verified by empirical analysis, combined with the representative event topic of Weibo rumor refusal platform in the early Covid-19 period.[Result/conclusion] Combined with the empirical research results of "Refute Weibo", the strategies to improve the effect of rumor refutation are obtained from three aspects:choosing authoritative and objective rumor refutation subjects and cooperating to refute rumors, paying attention to the framework setting of rumor refutation information media and guiding the psychological consciousness of rumor refutation audiences.
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