Korean Standard Certificate, suitable for the korean industrial standards is one which was designed not only to spread and utilize the industrial standard established for the industrial standardization, but to protect the consumer. In this study, the practical effects of the Korean Standard Certificate will be examined in various fields, based on the small medium enterprises which achieved the KS Certificate. In order to look into how the system has effects on the performance of the management in a company, the method of the actual approach will be used. In the end, the purpose of this study is to find the plan in which KS Certificate can be helpful to the development of the company.