“议程设置”理论是传播学中研究媒体功能的一个重要模式。议程设置的功能具有三个特点:一是传播效果分为认知、态度和行动三个层面,这些层面同时也是一个完整意义上的效果形成过程的不同阶段,“议程设置功能”假说的着眼点是这个过程的最初阶段,即认知层面上的效果。二是“议程设置功能”理论所考察的,不是某家媒介的某次报道活动产生的短期效果,而是作为整体的大众传播具有较长时间 “Agenda Setting ” theory is an important model for studying media functions in communication studies. The function of the agenda setting has three characteristics: First, the dissemination effect is divided into three levels: cognition, attitude and action. These levels are also different phases of a complete sense-effect formation process. The “agenda-setting function” hypothesis Attention is the initial stage of the process, the cognitive effect. Second, the “agenda-setting function” theory is not the short-term effect of a certain media event in a certain media, but rather the mass media as a whole has a long time