本文提出雙重政商關係的理論架構以探討中國因素對臺灣媒體自我審查的影響力消長。本文主張:臺灣媒體實施外導型自我審查的程度，取決 於其跨海峽政商關係與在地政商關係的相對強度。針對旺中集團與三立集團的比較個案研究發現:當某臺灣媒體的跨海峽政商關係比在地政商關係更加強化時，該媒體便會採取或增加外導型自我審查;而當其在地政商關係比跨海峽政商關係更加強化時，則會減少或取消外導型自我審查。本研究結果有助於了解中國因素影響力消長的條件、補充現有研究對於媒體自我審查增減的解釋，亦有助於思考對中國因素影響的因應政策。

This article provides a theoretical framework of dual government-business relations to explore the rise and decline of China’s influence on Taiwanese media’s self-censorship. It argues that the extent to which a Taiwanese media firm conducts external-induced self-censorship under Beijing’s influence hinges on the relative strength between its local and cross-strait government- business relations. The comparative case study of the Want Want-China Times Media Group and the Sanlih E-Television Group indicates that (1) a Taiwanese media firm is more likely to implement external-induced self- censorship when its cross-strait government-business relations are more robust than its local government-business relations, and that (2) a Taiwanese media firm’s external-induced self-censorship will reduce when its local government- business relations are more substantial than its cross-strait government-business relations. The research results improve our understanding of the conditions underlying China’s influence on Taiwanese media, supplement the explanation of the growth and decline of the media’s self-censorship, and facilitate the deliberations on policies responding to China’s influence.