The article overviews modern domestic and foreign scientific literature devoted to the content of higher library education. They reflect strengthening of librarians' positions in the process of developing professional competencies. The structure and content of philological knowledge are revealed. It has been found that the following philological components are most in demand amid public libraries activities: 1) communication science used in studying the library as a communicative social institution and the features of manifesting the library communicative function is applied in organizing the processes of external and internal communication in library institutions; 2) literary criticism used to guide the librarian in historical and modern literary processes is required for document examination and reading recommendations development; 3) folklore studies are important for orientation in the documented information array of Russian and world folklore, identification of regional folklore specifics in the implementation of local history library activities. Analysis of the section "Qualification characteristics of positions in culture, art and cinematography" of the "Unified competency catalogue of managers, specialists and employees" has led to the conclusion that the increasing integration of philology and librarianship is not properly evidenced in the regulatory basis for library positions. The article formulates philological requirements for a public library specialist, which, according to the authors' perspective, should be reflected in the professional standards of librarians and information activities being developed in Russia.