Gannam-gu established 'school digital libraries' in 15 of their elementary schools between September 2001 to October 2002, and now offers library services to both students and residents All expenses and human resources for these libraries are provided by the Gannam-gu and schools provide only their vacant classrooms. This is a good example of combined school-public library The type of combined school-public library can be a useful suggestion for our educational situation. So the purpose of this study is to reveal the actual condition and the efficiency of the library established by Gannam-gu, a well-known case of a combined school-public library.