Abstract:The notion of corporate social responsibility (CSR) has received extensive attention for many years, but no consensus has been reached on what CSR is. One important reason for such a frustrating situation is that the core of CSR is ambiguous and the research on the core of CSR is limited. This study argues that the core of CSR is corporate ethical responsibility. It first defines corporate ethical responsibility, then expounds why the core of CSR is corporate ethical responsibility, and finally the implications for future research and practices are discussed.