由媒介理論出發，本研究以傳播溝通實踐與社會建制的互動作為討論主軸，試圖藉由文獻檢視，重構關於媒介的認知論。本研究以近年來歐陸傳播學界熱中討論的「中介」與「媒介化」概念為主軸，整理相關文獻的討論並藉此將媒介科技、物質性、環境脈絡與制度化實踐等過往傳播理論較忽略的一些因素，重新帶入媒介的理論化。

Based upon media theory, the study reconstructs the epistemology of communication media by arguing that media be dissociated from text, organization or technology and be reconceptualized in terms of the convergence between fields of media practices and social practices. By reviewing the literature on “mediation” and “mediatization,” the study reconsiders much ignored elements, such as media technology, materiality, context and institutional practice, in theorizing the media.