在忽略企業主體性的情況下，國有企業往往被視為被動的行為體，然而「中國電信」卻透過破壞性創新模式，以「小靈通」突破政府的產業監管原則，為企業開創市場機會。本研究透過理性選擇制度論，恢復國有企業的主體性，探討在改革的制度環境中，「中國電信」經理人如何思維「小靈通」業務？政府如何考量監管內容的變更？以及管制與放鬆管制的變遷過程中，政企之間的互動。 研究發現，在政府政策預期的方向上，找到規制與企業利益的平衡點，乃是微觀放鬆與宏觀加強管理體制下，企業的生存之道。個案中，自主性提升的「中國電信」，便是在制度規範中找到追求利益的空間，推出「小靈通」，並透過改革過程中未能徹底解決的產權問題，利用國家重視國有資產保值增值的弱點，以及斬不斷的政企裙帶關係，促成最終的管制放鬆。 / Under the situation without caring about subjectivities of businesses, the state-owned enterprises (SOEs) have been defined as the passive actors. China Telecom, however, depended upon “Xiao-ling-tong” (China’s PHS system) to break through the norms of Chinese government by using Disruptive Innovation Model and got the opportunity into the market. This volume in the light of Rational Choice Institutionalism got the subjectivities of SOEs back and discussed with how the managers in China Telecom considered the strategies of “Xiao-ling-tong” in the circumstance during China’s telecommunication industry reform. And would like to know how the government faced the changing of norms and interactions among the SOEs into the process of control and vice versa at the same time. We found, fortunately, that getting the balancing act between government’s principles and SOEs’ interests is the way which could accord with expectations of government’s policy for businesses to exist. The cases showed the reason why China Telecom with added subjectivity can get its own rooms for profit in the norms is by using “Xiao-ling-tong” and through the property rights problems that couldn’t be resolved, by taking advantage of the fact that Chinese government cares about his properties perpetually or increasingly, and by utilizing the uninterrupted relationship between politics and commerce to push the deregulateon finally.