本研究以國內銀行為對象，分析行經營非傳統業務程度對銀行經濟效率之影響，並對資產規模大小及新舊銀行間的經濟及市場效率之差異日以探討。實證結果發現：(1)在經濟效率分析上：大銀行純技術效率優於小銀行，規模效率則未優於小銀行；非傳統業務比例較高之銀行各項效率值均優於傳統業務比例較高之銀行；新銀行純技術效率雖未優於舊銀行。(2)在市場效率分析上：大銀行各項效率值均優於小銀行；非傳統業務比例較高之銀行規模麥率優於傳統業務比例較高之銀行規模效率優於傳統業務比例較高之銀行；新銀行各項效率值均未優於舊銀行。

The objective of this study is to study the influences of the nontraditional revenues on commercial banks’ economic efficiency. The economic and marketability efficiencies of banks with different sizes were compared. The performances of new and old banks were also studied. The empirical results show: (1)big banks had a higher level in pure technical efficiency and however lower in scale efficiency than that of small banks. The banks with high ratios of non-traditional revenues were superior to the banks with high ratios of traditional revenues in every kind of efficiency. New banks were not superior to old banks in pure technical and scale efficiency produces that new banks’ technical efficiency was higher than old banks. (2)In the analysis of marketability efficiency, the various indexes of efficiency of big banks were better than those of small banks. The banks with high ratios of non-traditional revenues were superior to the banks with high ratios of traditional revenues in scale efficiency. New banks were not better than old banks in various indexes of efficiency.