The purpose of the article is to analyze traditional quantitative bibliometric indicators to assess theresults of scientific and methodological activities of the Department of Linguistic Support of InformationSearch Systems of the Yaroslav Mudryi National Library of Ukraine for 2017-2021, present quantitative andqualitative characteristics of this area of research. The methodological basis is centered the representationof scientific and methodological activities of the National Library is bibliometric analysis, which involves thestudy of basic statistical and bibliographic indicators of a particular area of rk with quantitative, qualitativedata, information analysis, and synthesis of semantic features of content and bibliographic data. The scientificnovelty consists in the complex bibliometric analysis of the scientific and methodical activity of the applieddepartment of the National Library and estimation of own potential and definition of prospects of developmentof this direction of activity of division. Conclusions. Solving applied problems of linguistic support of libraryinformation retrieval systems is accompanied by appropriate scientific and methodological activities. Byrepresenting the main object of study in bibliometric research is the dynamics of publishing activity in agiven period, the published works of specialists of the department were grouped by characteristics: authors,thematic sections, types of publications, periodicals, and more. One of the areas of bibliometric research wasthe separation of the total number of publications that are co-authored and created in collaboration withexperts from other institutions. In general, the material presented in the article allows identifying problematicaspects of scientific and methodological activities of the applied department of the library and promisingareas of development in the linguistic support of library information retrieval systems. The use of bibliometricanalysis techniques for certain areas of library work contributes to the improvement of management processesin applied areas of libraries.Keywords: library, information retrieval systems, linguistic support, scientific and methodical activity,bibliometric analysis.