Abstract:The emergence of SA8000 caused Chinese firm pay high attention to corporate social responsibility while the academic research of corporate social responsibility became an important issue. SA8000 will have great impact on Zhejiang individually-run enterprises whose effort on social responsibility is determined by many situations. Based on a survey of Zhejiang individually-run enterprises, this paper did an empirical research on influential factors of social responsibility of Zhejiang individually-run enterprises and made a conclusion that scale, type and stage of development were the main influential factors that determine the effort on social responsibility in Zhejiang individually-run enterprises.