传统媒体与新媒体之间单向线性的传播模式已无法充分解释信息在不同媒体间的流动 现象。本文从“上海交大捣鸟窝”这一不实新闻的传播事件出发，运用一种新型的循环传播 模式，解析在扩散、证伪、纠错过程中传统纸媒与微博的互动关系及相互影响的逻辑，并以 此验证传统纸媒的首发优势和议程第一设置者地位如何被微博化解，而两者的合作又如何提 高了媒体对不实信息的自净效率。研究显示，循环互动模式是一种可用于解释传统媒体与新 媒体关系的传播模式。研究同时也提醒传统媒体：在竞争激烈的多媒体环境下，纸媒既要积 极主动地抢占信息的“第一落点”，更应自觉坚守新闻专业化的本位优势；发现错误后，纸 媒只有充分利用既有的公信力，通过专业化的操作第一时间纠错证伪，才可能继续掌握或夺 回议程设置的主动权。

The linear model of communication between traditional media and new media cannot be used to explain the information flow among different media. The article uses the new circular interactive communication model and a case study of "birds' nests demolishing in Shanghai Jiao Tong University" to analyze the interactive logic between traditional print media and micro-blog when they spread, verify and correct messages. The article demonstrates how traditional media's position of being the first agenda-setter has been replaced by micro-blog and how the cooperation between the old and the new media can improve media's automatic depuration on false information.Researches show circular interactive communication can be used to explain the relationship between traditional media and new media. The article also warns that facing the fierce competition among multiple media, traditional media should not only be proactive to obtain information but also stick to professional reporting. With established credibility, printing media should correct errors as soon as possible during reporting to seize back its agenda-setting position.