大众传播正在以迅猛的速度改变着人们的生活。在这个每天充斥着“爆炸性”信息的时代里,媒体如何规避一些制度性地方约束,履行环境监视功能。本文从突发事件与公共危机的关系、大众传播预警功能以及法律法规保证方面谈起,对媒体如何处理与政府、公众的关系以此发挥突发事件的有效预警报道予以探讨。 Mass communication is changing people’s lives at a rapid pace. In an era full of “explosive” information every day, how can the media circumvent some institutional constraints and perform environmental monitoring functions? This article discusses the relationship between emergencies and public crisis, the function of early warning of mass communication and the promulgation of laws and regulations, and discusses how the media handle the relationship with the government and the public and give effective warning of the emergencies.