The low social prestige of librarian profession is not only caused by its own reasons of librarianship, but also influenced by the political, economic and social backgrounds of different eras. Through in-depth interviews, this study investigated the candidates' profession choice experience since the college entrance examination recovery in 1977, and obtained the social prestige of library profession during different periods. The study found that: first, the popularity of library science cooled in the 1990s. Second, In the 1990s, the students' attitude to choosing a career changed. Before that, they wanted to work in the library, but after that, students thought that they would not necessarily work in the library after graduation. Third, the social prestige of the librarian is influenced by national policies, library industry policies and social and economic environment. This suggests that the social recognition of library profession is not only influenced by the development of the industry itself, but also the restriction of eras and social and political economy. Therefore, we should grasp the current policy and social environment opportunities, and strive to develop the library career to a new height.