The purpose of this study is to suggest for future public libraries in the knowledge information society. The development of Internet requires to change the role of information service in public libraries, and the change of social circumstance requires the role of public libraries as cultural spaces. For the future public libraries, the suggestions are that public libraries provide an instruction for users in order to got information through Internet. Next, public libraries provide comfortable safe, luxury space in order to create regional culture so that users can get experience high culture, and use the space as cultural living zone.