The Capital Library of China attaches great importance to giving a full play to its function as a central library and promoting the service systems of public libraries in Beijing. Through the Beijing public library computer information services network, the library constructs the service systems of public libraries in Beijing featured by mutual connection and sharing and convenience. As the Center for Ancient Books Protection in Beijing, the library provides guidelines for ancient books protection and development in Beijing. With the “Sharing Project”, the library realizes digital information service and promotes the unification of public culture in cities and rural areas. With the “model room for digital culture community”, the library promotes the “digital culture community” service across the nation. With the initiation of and participation in the “Alliances of Libraries in Beijing”, the library instructs libraries in the whole nation to enhance the resources integration and resources sharing by playing the model role of the cultural center in China.