[目的/意义] 新冠肺炎疫情是新中国成立至今传播速度最快、传染范围最广、防控难度最大的一次重大突发公共卫生事件，微博是新冠肺炎疫情舆情传播的重要场域，加强突发公共卫生事件微博舆情的针对性研究，利于有效应对突发公共卫生事件舆情。[方法/过程] 基于社会网络分析法，探索新冠肺炎疫情舆情传播的网络结构特征、各传播主体的位置与角色。[结果/结论] 新冠肺炎疫情微博舆情体现出总量巨大、节点林立、关系复杂的网络特征；不同类型的微博用户在网络中的传播作用各不相同，官方媒体微博、商业媒体微博、自媒体微博在突发事件舆情网络中占据不同的传播位置、具有不同等级的传播能力；在突发公共事件舆情应对和引导过程中，应当推动各类媒体的广泛合作。
[Purpose/significance] COVID-19 is the most rapid public health event since the founding of new China. It is the most important field of public health emergency. The microblog is an important field of public opinion dissemination of new crown pneumonia epidemic. The targeted study of microblog public opinion on public health emergencies is conducive to effective response to public health emergencies.[Method/process] Based on the social network analysis method, the network structure characteristics of public opinion transmission in corona virus disease were explored.[Result/conclusion] The microblog public opinion of the Corona virus disease reflects the network characteristics of huge amount, numerous nodes and complex relations. Different types of microblog users have different role to communicate on the network, state-run microblog, commercial media microblog, self-media microblog in the emergency public opinion network occupies different distribution positions, with different levels of communication capacity. In the process of responding to and guiding public opinions on public emergencies, extensive cooperation among various media should be promoted.
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