The article widely describes the concept of author's modality in the context of linguistic research and provides a brief history of the study of the category of modality in modern linguo-stylistics and text linguistics. Author's modality is considered as a category that plays the role of compiler, organizer of the literary text. The author's modality was also studied as a communicative-pragmatic and subjective assessment category. In such works as Kazakh writer A. Kekilbayev's novel "Aṅızdıṅ aqırı" and Kyrgyz writer Sh. Aitmatov's novel "Kıyamat", famous American writers Theodore Dreiser's novel "Jennie Gerhardt", Oscar Wilde's "The Picture of Dorian Gray" the different ways of expression the category of author's modality were studied, and similarities and differences were identified.