从两个方面论述学科馆员在图书馆所扮演的重要角色。在网络环境下学科馆员不仅充当着联络馆员、咨询馆员和采访馆员的角色,他们同时还以学科研究员的身份研究新形势下学科的变化趋势。另外,认为学科馆员的建设不仅需要学科馆员提高自身的素质,改变服务理念,国家也应采取相应的运行模式来促进学科馆员的制度建设。 Discusses the important role that subject librarians play in the library from two aspects. Under the network environment, subject librarians not only act as liaison librarians, consulting librarians and interview librarians, but also study the changing trends of disciplines under the new situation as subject researchers. In addition, we think that the construction of subject librarian not only needs subject librarian to improve their own quality and change service concept, but also the state should adopt the corresponding operation mode to promote the construction of subject librarian system.