本研究以2004-2007年大中華地區，包括台灣、香港以及中國大陸的上市銀行為研究對象，進行銀行間經營效率及市場效率的比較分析，並利用Lawrance M. Seiford & Joe Zhu(1999)兩階段的資料包絡分析法(data envelopment analysis, DEA)為基本架構，再加上調整環境因素後的第三階段DEA模型分析估計大中華地區各銀行各年的效率值。DEA分析結果如下：
台灣與香港地區銀行第一階段技術效率值為0.737，經過第二階段環境變數調整後，整體銀行技術效率值降低至0.219，國家排名則由第一階段的台灣領先香港，變成香港領先台灣。而在市場性效率的部分，兩地銀行整體平均效率值為0.382，國家排名則為香港領先台灣。而由規模報酬的角度來看，兩地銀行皆處在規模報酬遞增階段，顯示兩地銀行業應該擴大生產規模增加獲利。不論是在第一階段或第三階段，將兩地銀行分類為金控或非金控(集團或非集團)並比較其效率差異後，發現台灣地區銀行在獲利效率上表現較獨立銀行佳，而市場性效率則恰好相反；香港地區的集團銀行與非集團銀行則在各種效率的表現上均無顯著差異。
大中華地區銀行第一階段技術效率值為0.693，經過第二階段環境變數調整後，整體銀行技術效率值降低至0.256，國家排名則由第一階段的中國大陸領先台灣、香港，變成中國大陸領先香港、台灣。而在市場性效率的部分，三地銀行整體平均效率值為0.409，國家排名則為香港領先中國大陸、台灣。而由規模報酬的角度來看，台灣與香港兩地銀行皆處在規模報酬遞增階段，顯示兩地銀行業應該擴大生產規模增加獲利，而中國大陸大部分銀行則處在規模報酬遞減階段，顯示中國大陸銀行應縮減規模降低成本。

This paper analyzes the profit efficiency and marketablility on bank performance for a sample of list banks operating in Taiwan, Hong Kong, and China between 2004 and 2007.We employ Lawrance M. Seiford & Joe Zhu(1999) two-stage production process including profitability and marketability performance using a non-parametric frontier method — data envelopment analysis (DEA) first, and then we add three-stage data envelopment analysis (DEA) to measure performance efficiency of each bank in Greater China area. The empirical results show as follow:
In the two areas of Taiwan and Hong Kong, the Technical Efficiency score is 0.737 for the first stage; in second stage, we adjust the model with some environment variables, and the Technical Efficiency score is decreased to 0.219. The rank order in the first stage is Taiwan, then Hong Kong; however, in the third stage, Hong Kong, then Taiwan. Analyzing the Marketability, we find that the average efficiency score for the banks in each area is 0.382; the rank order is Hong Kong, then Taiwan. Comparing the Scale Efficiency, we find that both the banks in Taiwan and Hong Kong are getting increased, so the banks in the two areas should enlarge their scale to get profit. Besides, we classified the two areas’ banks as banking holding company and non-bank holding company to compare the efficiency. We find that in Taiwan, whether in the fist stage or in the third stage, the profitability for the non-bank holding companies is better than the bank holding companies; the marketability is the other way round. In Hong Kong, the performance of bank holding companies and of non-banking holding companies in profitability or marketability shows no difference.
In Greater China area, the Technical Efficiency score is 0.693 in the first stag; in second stage, we adjust the model with some environment variables, and the Technical Efficiency score is decreased to 0.256. The rank order in the first stage is China, Taiwan, then Hong Kong; however, in the second stage, China, Hong Kong, then Taiwan. Analyzing the Marketability, we see that the average efficiency score for the banks in each area is 0.409, and the rank order is Hong Kong, China, then Taiwan. Comparing the Scale Efficiency, we find that both the banks in Taiwan and Hong Kong are getting increased, so the banks in the two areas should enlarge the banks’ scale to get profit. However, in China, the scales of most banks are getting decreased, which shows that the banks in China should reduce the banks’ scale to lower the cost.

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