Abstract: Following the advent of and continuous progress of technology, computer network and information management have gradually being incorporated into the daily operation and management of university libraries all around the world. The service system of university libraries have also transformed from the conventional reference consulting model into a knowledge-based service model. This transformation has improved the professionalism and individualism of university libraries. Therefore, establishing a competent one-stop information service model has significant and important values. In this work, we analysed the basic functionalities and the feasibility of one-stop information service model for university libraries. We also discussed in details the construction methodology for different modes, for reference only.