Evaluating governance efficiency of the board of directors based on DEA model

On the premise of Board of Directors(BoDs)' effectiveness,this paper uses super-efficiency DEA model to evaluate BoDs' governance efficiency of 712 China's listed companies,regarding board characteristics as inputs and financial performance indexes as outputs.The purpose is to find the best board structure and the faults of domestic BoDs' governance to improve BoDs' system in China.