The Taipei Municipal Library has devoted to the library promotion service recently, especially to run all kinds of promotion activities with the utmost effort. In addition to planning and conducting activities fit for readers of all ages, what the library emphasizes most is the execution of activities related to library user education and promotion activities for children. To enhance the interchange and cooperation between public libraries and school libraries, the text, taking the promotion servicies of the Taipei Municipal Library for example, discussing about how do libraries exchange and cooperate with school libraries in practical ways, the concrete concept to help achieving the goals of mutual aids and cooperation of resource sharing.