Due to the frequent occurrence of public emergency events and the extensive use of social media in recent years, the public is more and more involved in the communication of public emergencies. As important members of the public, the rapid and massive information sharing of social media users makes them play an increasingly crucial role in the emergency processing. Hence, it is necessary to analyse information behaviours of social media users in emergency events. This article mined the information behaviours of users in multiple events to reflect the public’s behaviour preferences, aiming to provide information support for emergency handling. Specifically, we collected the user-generated contents related to emergency events, and then analysed the user-generated contents from multiple dimensions to obtain the corresponding information behaviours. Finally, based on the comparative analysis of four events, the information behaviour preferences of the public during emergencies were obtained. The experimental results indicate that the public’s behaviours in emergencies are related to their own interests and economic status, and curiosity about the details of events is the consistent appeal of the public.

由于近年来突发公共事件的频繁发生和社交媒体的广泛使用，公众越来越多地参与到突发公共事件的传播中。作为公众的重要成员，社交媒体用户快速、海量的信息共享，使他们在应急处理中发挥着越来越重要的作用。因此，有必要分析社交媒体用户在突发事件中的信息行为。本文通过挖掘用户在多个事件中的信息行为来反映公众的行为偏好，旨在为应急处置提供信息支持。具体来说，我们收集了与突发事件相关的用户生成内容，然后从多个维度对用户生成内容进行分析，得到相应的信息行为。最后，通过对四种事件的对比分析，得出突发事件中公众的信息行为偏好。实验结果表明，公众在突发事件中的行为与自身利益和经济状况有关，对事件细节的好奇是公众的一贯诉求。