Corporate Social Responsibility issues are again attracting attention by stakeholders, governments, and businesses. The purpose of this study is to examine not only the effects of CSR (ethical, environmental, well - being CSR) on brand image and customer trust, but also the effect of brand image and customer respectively trust on customer loyalty. This study shows that CSR plays an important role in customer loyalty through brand image and customer trust. That’s all, CSR has effect on brand image and customer trust. Brand image and customer trust respectively have a positive effect on customer loyalty.\nTherefore, corporate CSR activities are expected to increase the brand image of the company to the customers, and enhance the customer s trust, and consequently have a great influence on making the loyal customers of the company. From this viewpoint, this paper suggests that fast food companies should consider how to effectively and strategically implement CSR activities in conjunction with corporate goals when corporate social responsibility is gaining attention these days.