[Purpose/significance] This thesis is to study the plausible measures of building subject librarian system in the condition that the direction of scientific research is not stable, the funds of collection construction is short, the overall quality of librarians and readers is not high enough and the prospect of librarians is poor.[Method/process] By analyzing the root cause that restricts the construction of the subject librarian system, based on the virtue perspective of development, following the laws of library development and information services, this thesis researches the condition construction, the system construction of university library and the cultivation and method of usage of librarians.[Result/conclusion] The purposes are to seize the leading role of discipline construction, ensure the input by overcoming the difficulties, plan and implement the construction of library by means of iterative communication, improve the overall quality of the staff, focus on the cultivation of university subject librarian, institutionalize the delivery system, put the protection of regional research information as top priority, improve the system of subject librarians management and set the content and criterion of the merit pay.