As a new library system, the 'human library', in which a man becomes an information resource, provides a library service through face-to-face communication in delivering knowledge and information to users. Since the human library exchanges information with 'human books', it shows some characteristics that are different from traditional library services and connotes some meanings as a new library service. In that, this study focuses on the human library of Seongbuk-Gu, Seoul. Specifically, in order to enhance our understanding of the human library, this study looks into the theoretical underpinnings and the background of human library in Seongbuk-Gu, examines the case of the human library in Seongbuk-Gu, analyzes the factors that influence the human library, and makes some suggestions for improvement.