This study distinguishes two kinds of corporate social performance, corporate social responsibility and reputation respectively. Using the survey data made by Common Wealth Magazine, we explore the relationships between corporate social responsibility, reputation and financial performance. In order to find the causal relationships between variables, time lagging data was used. We find the mutual effects existing between corporate social responsibility, reputation and financial performance. Corporate social responsibilities were more closely related to prior financial performance than subsequent financial performance. Reputations were more closely related to subsequent financial performance than prior financial performance. Finally, we discuss the meaning and limitation of this study.