本研究主要探討過度自信經理人對企業社會責任與財務績效之關聯,由於企業社會責任能夠創造聲譽並且吸引投資人與利害關係人目光,為公司建立良好的品牌,此效益有利於公司之財務績效,因過度自信經理人對公司前景樂觀,高估未來現金流量,同時認為公司較有餘裕增加投資,故以過度自信經理人出發,討論過度自信經理人與社會企業責任之關聯性,驗證過度自信經理人是否增加企業社會責任投資,再探討過度自信經理人是否加強企業社會責任與財務績效之正向影響。實證結果顯示,過度自信經理人與企業社會責任有顯著正相關性,可得知若經理人具有過度自信傾向,會增加企業社會責任投入,另外,過度自信經理人對企業社會責任與財務績效,有顯著正向調節效果。;The purpose of this study is to explain the relationship between corporate social responsibility and financial performance. In this study, we investigate the relation of manager’s overconfidence with corporate social responsibility. Moreover, we show whether overconfident mangers will increase the positive relationship between corporate social responsibility. The results demonstrate that overconfident managers increase the investment of corporate social responsibility. Additionally, we found that manager’s overconfidence significantly positively moderates corporate social responsibility and financial performance.