Abstract
A management system for the library service is proposed, where the reference experiences at the counters of libraries are accumulated in a knowledge base and the latter base works so as it guide users along the lines of their interests. The system is a guide system formed of reference tools of tree structure. In practice, the user selects any subject field according to his interest, i.e., that of the feature, the information item, the index of the reference under questions, or any tool the user wants to use. Hence, the proposed system will allow the users to share the reference experiences which have been accumulated in the libraries.