爭議多年的樂生療養院拆遷事件，2007年在網路上引發強大的保留聲浪，部落客主動採訪、報導、串連、評論，讓樂生議題受到主流媒體及政治人物的矚目，進而影響政府決策。在公民新聞並不盛行的台灣，這些具有報導性質的書寫，展現了極大的公民媒體能量。 　　本論文從傳統的公民新聞意理出發，蒐集近年國內外重要的網路公民新聞經驗，探看網路時代公民新聞的變與不變；進而以樂生保留運動為主要案例，紀錄此一公民新聞浪潮爆發、凝聚力量、展現人氣的過程，這些積極的網路使用者運用Web2.0平台工具、在線上及線下活躍串流，讓他們適時填補主流媒體忽視的公共議題，形成一種公民傳播體系。他們的實踐經驗，也隱然投射出台灣公民社會的「運動型媒體」趨勢。 / The incident of Lo-Sheng Sanatorium has caused a dispute amongst our people for many years now. And when the incident aroused the support of majority to preserve the sanatorium through the world-wide web in 2007, bloggers began to voluntarily interview, report, link, and comment on the subject matter, which attracted the attention of mainstream media and political figures. And these attentions even affected the government’s final decision. In the land of Taiwan where civic journalism was not popular, these newsworthy articles show how great the power is of civic journalism. 　　This thesis starts with the traditional concept of civic journalism, introducing important cases on the web from all over the world and to probe into the constancy and inconstancy of civic journalism in the internet era. With the incident of Lo-Sheng Sanatorium as the main subject matter of this thesis, we’ll recount the process in which this citizen news broke-out, united citizen strengths and gained news value. These enthusiastic internet users made use the Web 2.0 tools to actively link everyone together, whether online or offline. They can also work as the supplement to the mainstream media and provide the news that was overlooked, which has now developed into some kind of citizen media system. This realization has also projected the trend of Taiwan society’s event-related media.