In the conditions of intensive growth of scientific and scientific-technical information, rapid changeability and updating of the system of scientific knowledge there is a need to study issues related to professional communication. Users of scientific language master its culture gradually; acquire life experience, their own knowledge, general and professional erudition of the speaker. The aim of the article is to carry out a comprehensive analysis of linguistic means and identify the features of the implementation of professional linguistic personality of a scientist, author of scientific articles on the speciality «Earth Sciences». Special attention is devoted to a brief review of theoretical provisions of domestic researchers engaged in the study of professional linguistic personality and idiostyle. Scientific novelty lies in the analysis of linguistic means characteristic of the individual style of a scientist on a new linguistic material (scientific texts on the specialty «Earth Sciences»). This approach allowed us to consider the influence of a person's professional status on the texts produced by him/her. The material for the analysis is the articles selected by the method of continuous sampling on the scientific specialty «Earth Sciences». In addition, the method used in this article was continuous sampling method, content analysis, comparative analysis. The obtained results showed that in order to build a model of professional linguistic personality of a scientist, it is necessary to conduct a comprehensive psychological and linguistic analysis of the scientist's texts at the verbal-semantic, linguistic-cognitive and pragmatic levels, highlighting the correlation and influence of ethno-cultural, socio-group and individual aspects of personality content. Despite the fact that the author of scientific articles is limited by the norms of scientific style, there are certain linguistic means that allow reflecting the author's uniqueness under the existing norms of text formation.