With the higher education shifting from the mode of extensive development which is aim at expanding school scale to the mode of intensive development which is centered on discipline construction and quality improvement, the disciplinary level, contribution and influence have become the core competitiveness of universities.It puts forward higher requests to the service duty of high school library, and compells the digital library to respond faster, to make and adjust the development plan in time, and to realize the coordinated development of technology, resources and services. Consequently, it is more urgent to constructe the library discipline service platform.

Along with the development of information technology and the reinforcement of subject construction in higher colleges, higher college libraries should innovate on service models to carry out subject services. This paper analyses the necessities of subject service carried out by higher college libraries, and discusses the construction of subject service platform in higher college libraries.