過去相關文獻從公司治理的角度、股權結構的角度、所有權與經營權分離及代理問題的角度等等來探討董監事持股對公司經營績效的關係，而與其他研究不同者，本研究係從董監持股成數差異數的角度，分析董監持股與公司經營績效的關係。 本研究以2005年到2011年在台灣證券交易所上市之一般產業公司為研究樣本，在控制公司治理與公司特性相關變數，以資產報酬率、股東權益報酬率、每股盈餘EPS衡量公司績效，探討董監持股與規定持股成數之差異數對公司績效之影響。實證結果發現，董監事持股成數超過規定持股成數之公司，其公司經營績效較佳。分析結果可能表示，董監持股比例高，因為其自身的財富與公司財務運作之結果關係密切，監督管理者的動機會較強，而使得公司表現較佳，支持董監事持股比例高於公開發行成數規定之公司，其經營績效較佳之研究假說。換言之，本研究發現符合立法者期望透過較多之董監持股，增強其對公司努力經營及監督管理之動機，以達到提升公司經營績效之目的。 / Most previous studies focus on the effect of ownership structure on firm performance. Different from studies from other countries, the institutional setting in Taiwan concerning minimal board members shareholdings required by the “Rules and Review Procedures for Director and Supervisor Share Ownership Ratios at Public Companies (the Rules henceforth)” provides a unique research opportunity to examine the effect of the Rules on firm performance. Based on a sample of general industry firms listed in Taiwan Stocks Exchange over the period of 2005 to 2011, this study investigates whether companies with board members holdings more shares than required shareholdings by the Rules have better firm performance. This study employs return on assets, return on common stockholders’ equity and earnings per share as measures for firm performance, and difference in shareholdings over the required shareholdings as the primary explanatory variable. After controlling for governance related and firm characteristic related variables, the empirical results indicate that firms with positive differences in board ownership from the required shareholdings by the Rules have better performance. This empirical evidence implies that the legislative purpose of the Rules—enhance firm performance through the alignment of ownership interest— is supported.