自1997年亞洲金融風暴後、1998年下半年台灣陸續發生之上市上 櫃公司財務危機，美國於2001年發生安隆與世界通訊等公司暴發財務危 機等一連串弊案後，公司治理議題乃曰益受到重視，故近年來我國金融 監理機構亦日益重視此一課題。而外資銀行擁有較先進的技術、經驗及 專門知識，因此可以強化地主國銀行的競爭力，故銀行業也積極引進外 資，利用其資金、人才或技術，提升其競爭力及經營效率。因此，本研 究以臺灣銀行業為研究對象，研究期間為2002〜2013年，針對15家金控 子銀行與17家非金控獨立銀行，探討公司治理、外資進入對其經營效率 之影響。本研究首先應用Battese and Coelli (1995)之隨機邊界法 (Stochastic Frontier Approach; SFA)探討公司治理、外資進入對銀行業效率 之影響；因金控與非金控銀行之成本函數並不相同，故進一步利用Huang etal. (2014)的隨機共同邊界法(Stochastic Metafrontier Approach; SMF)，比 較公司治理、外資進入對金控子銀行與非金控獨立銀行技術缺口效率及 共同成本效率之差異。

Since the 1997 Asian financial crisis, the publicly traded company’s financial crisis have occurred in the latter half of 1998 in Taiwan. There were financial crisis after a series of corruption scandals, related to Hanlon and WorldCom Group etc. in 2001 in the United States, the public then pay more attention to corporate governance issues. In recent years, therefore, Taiwan’s financial supervisory agency has also increase emphasis on this issue. In general, foreign banks have more advanced technologies, experiences and expertise, which can strengthen the competitiveness of the host country banks. Therefore banks attract foreign investment actively, and make use of their funds, personnel or technologies to enhance their competitiveness and operational efficiency. This study selected Taiwan banking, 15 financial holding banks and 17 non-financial holding banks, to investigate the impacts of corporate governance, foreign investment on business efficiency from the study period of 2002 to 2013. This study first employed Battese and Coelli (1995) of the Stochastic Frontier Approach (SFA) to investigate the impact of corporate governance and foreign capital to the banking sector efficiency.As the cost function of financial holding banks and non-financial holding banks are not the same, the study included further use of Huang et al. (2014) of Stochastic Metafrontier Approach (SMF) to compare the effects of corporate governance and foreign investment to technology gap efficiency and cost efficiency of both financial holding banks and non-financial holding banks.