This research clarifies the following issues to obtain useful knowledge for future public library planning by capturing the behavior of the complex public library based on the user’s purpose of visit. First, the functional structure and management policy of the complex public library in recent years were examined. Second, the connection between users’ purpose of visit and the space used at St and Tg libraries were clarified. Finally, the users’ purpose of visit, patterns and development of “by-the-way use,” and expansion of space used under “stop by use” were evaluated to determine the usage structure of the stay-oriented library.
