Data services, knowledge services, and information services are the core service elements of university libraries in the context of the Double First-Class Initiative. Combined with the current situation of insufficient overall service capacity of libraries, this paper proposed strategies and implementation paths for optimizing the service system from three aspects: the construction of the professional qualification system for librarians, the establishment of post institutions, and the construction of library culture. Long-term path: putting library human resource management into the legal track, taking the lead in local legislation, and promoting the construction of library legislation and professional qualification certification system; optimizing the personnel system, implementing hierarchical management and classified assessment for professional librarians and auxiliary librarians. Short-term path: intensive post allocation, namely, assigning the core strength in the core post, and tackling the temporary major work combining multiple forces in the form of a "working group"; building an open knowledge service ecosystem, accelerate the cross-border integration of libraries and other organizations, and striving to build the core competitiveness of libraries.