收視率對當代電視新聞的影響，是國內外傳播學者關切的議題之一，尤其以台灣的媒體生態而言，僅有一家收視率調查公司，所提供的收視率數據遭到挑戰，學者憂心新聞媒體為商業服務，恐將對新聞發展帶來不利的影響。 新聞組織需要一項評估的工具，「收視率」既然如此受到質疑，為何長期以來一直找不到收視率以外的機制足以取代？也就是說，如果要找到一項得以取代收視率的機制，外界必須先了解收視率如何在當代媒體機構中被使用，它與新聞組織到底存在什麼樣的共生狀態，過去外界透過短暫觀察與訪談，便對新聞室運作與收視率的關連下了評論，從實務經驗來看，並不認為其知其所以然。本研究將從實際新聞室的運作，對於收視率在新聞室中的流動，提供最直接的證據。 本研究將以電視編輯的對話分析，輔以資深人員訪談，解構收視率在新聞室中的工具性；繼之從傅柯的權力系譜學下，觀察新聞組織如何披著收視率的外衣，馴服新聞編輯，反之，新聞編輯如何透過權力的流動，利用收視率對組織進行反制。提供最實際的場域證據，展現新聞室與收視率的日常活動經驗，讓外界得以了解，並正視兩者之間的緊密聯繫，對未來提出改變收視型態建議時，能更臻成效。 關鍵詞：收視率、新聞編輯、工具性、傅柯、權力。 / The influence of TV rating cause to news organizations was a topic that gains most focus of the scholars in mass-communication era. Especially in Taiwan, there is only one institution provides such statistics, therefore the authenticity of these statistics has been widely quest about. Scholars also shown their worry about that the commercially development of news organizations will lead them heading to the iceberg. Indeed, News organizations need a tool to evaluate the effects of their programs to the audience. Even through TV rating has been queried by scholars, why the tool still irreplaceable? There must be something that deep inside between TV rating and news organizations that haven’t been noticed. To break into this connection, we must first realized that TV rating already been symbiosis with news organizations. And clear-out how the tool been used inside news organizations. For the time being, scholars have been reviewing such relation from outsider point of view and made the conclusion based on such basis. From which, we think is just skin-deep. In this study, we will provide evidences from inside the news room. This thesis is based on analyze of the communications between editors. Together with interviews of senior news producers, we try to assay the tool phenomenology of TV rating inside the news room. Further we observe how news organizations use rating to discipline news editors under the theory of genealogy of power form Michael Foucault. In contrary, how editors resist news organizations through floating power of rating. From such study we can clearly identified the reality of close connection between TV rating and news room. And then we could have more valid suggestions about replacing TV rating in the future. Keywords: TV rating, news editors, tool phenomenology, Foucault, power