Abstract: With the development of network information, "Internet plus" has brought innovative ideas for the development of library service, New thinking modes such as user thinking, big data, intelligent thinking and so on will promote the library to change the existing isolated development model, and constantly innovate the service level and expand service area. The service space of innovative library is the development trend of "Library plus Internet. "Based on the investigation, this paper studied the transboundary service model of "Library plus Internet" from the rise of "Internet plus" strategy, the significance and challenges, the existing foundation and features, service mode and service field, exploration and outlook, so as to play a certain role in promoting the development of library.