Background. Modern conceptual possibilities of linguistic and stylistic analysis of a literary text provide for a comprehensive multidimensional study of the full potential of a work of art. From this perspective, a work of fiction is interpreted both from the standpoint of purely literary analysis, which reveals the peculiarities of the figurative and ideological plans of the text, the extralinguistic context of the cultural, historical and conceptual fields, and from the standpoint of the possibilities of deep comprehension of the language structure of the text, determining the connection and relationship of linguistic units from different levels, which in their totality implement a specific strategy of the aesthetic concept of the work. The primary goal of linguistic analysis is to detect and interpret the language phenomena present in a literary text, considering both their semantic content and contextual usage. The purpose. The purpose of the study is complex. First of all, it lies in the necessity to identify the features of the analysis of a poetic text. Next, to determine the place of idiostyle in linguistic research, Furthermore, to find out the main characteristics of idiostyle, and reflect the outcomes on linguostylistic analysis of the writer's poetic works. Methods. The work uses the following research methods: linguistic analysis: a detailed study of the vocabulary, syntax, phonology, and morphology of a poetic idiostyle; stylistic analysis: a study of the use of stylistic devices, such as similes, metaphors, allusions, and other figurative devices; comparative analysis method. Results. The study of idiostyle can be carried out by identifying individual-authorial deviations from the general rules and frameworks of literary text organization followed by their subsequent interpretation of these deviations through the prism of the worldview foundations that determine an individual-authorial style (a system of values and norms that are unconditionally acknowledged by the individual, personal life experience, philosophical views, etc.). The analysis of existing approaches to the study of idiostyle has shown that it is manifested primarily in the author’s choice of the work’s genre and only then in the selection of particular linguistic means, so-called idiostyle markers, which allow the author to achieve his communicative goal. Idiostyle is created by textual means at all levels of the language (phonetics; graphics, spelling, punctuation; morphology; syntax; stylistics), as well as by cultural references. Discussion. There are three dominant approaches to describing the concept of idiostyle by linguistic and linguistic stylistic elements. To be more precise, idiostyle is considered to be a set of linguistic and stylistic means that are peculiar to a particular author. From the perspective of communication stylistics, idiostyle is viewed as an extralinguistic term that also stems from the author’s unique self-expression, although the field of study is a certain text, it is its lexical component. The widest approach is the understanding of idiostyle in the aspect of inclusion in its composition of linguistic and extralinguistic factors, determined by linguistic means and author’s individual creative features. In our work, we define idiostyle as a framework of meaningful and structural linguistic elements typical of the texts of a specific author, which ensures the individuality of linguistic expression manifested in these works.