Abstract:
[Purpose/significance] While provide service for teaching and scientific research, the American university libraries also attach great importance to social service, and expand innovation and transformation in the era of "Internet +". The social service in American university libraries developped early, of high degree of openness, wide service target diverse service content and various service mode, gradually formed the mature characteristic service pattern, which may provide reference for Chinese university libraries' social service development innovation practice.[Method/process] In 2016, the authors investigated the practical activities of the social service innovation in many university libraries in the United States and visited the librarians who have engaged in social services. Under the guidance of the American library librarian, the paper designed the online questionnaire.Based on the investigation results, this paper analyzed the current situation, innovation practice and development mode of social service in the United States University Library Alliance.[Result/conclusion] The road of social service innovation development of Chinese university libraries needs to pay attention to the following aspects:focus on the openness of different social groups;promote the innovation of library resources open access mode;to realize the sharing of resources through various means;expand the source channel of library funds;construct a new social service model suitable for China's national conditions.