The study of the linguistic and stylistic features of works, both in scholarly and practical terms, is relevant for stimulating the further development and improvement of the stylistic capabilities of the writer's language. The study of the linguistic richness of the poetic works by Platon Alekseevich Sleptsov-Oyunsky (1893-1939), one of the founders of Yakut Soviet literature, poet, prose writer, playwright and philologist, and his stylistic and artistic-visual means makes it possible not only to deeply and comprehensively evaluate the poet's works, but also helps to study the Yakut literary language, as well as the state of the art of the word of the first half of the twentieth century. In the Oyunsky’s poetry, the rich pictorial possibilities and artistic forms of the Yakut vocabulary are revealed. The language of Oyunsky's poetic works forms a peculiar style of the writer, which determines the ideas, thoughts of the poet, his mood. The material for studying the language of Oyunsky's poetry was the texts of the poet's poetic works from the book "Selected Works" (volume 1, 1992). The study used the method of continuous sampling and the descriptive method. Based on the analysis, it is concluded that the special, heroic, revolutionary style of the poet was created through his use of neologisms, paired, doubled words, synonyms, antonyms. Sensitivity to language, characteristic of the poet, is clearly manifested in the diverse implementation of linguistic means. In the Oyunsky’s poetry, semantic, lexical and stylistic innovations of general artistic means of expression are widely used.