In the poem “Son na kurganye” by Yanka Kupala the author uses symbolic form and content (dream, night dream) in order to present the existence of man from the perspective of his entitled fate and hostility of existential space. The author of the article directs his attention to the presence of poet’s social predictions for Belarusians. Symbolic form and content, conventionality of artistic form and its elements (mysticism, recurrence, analogy of events, etc.), semantic code, problems, combination of the past, present and future in the space of dream-code have been analyzed. In order to reinforce conclusions about the conceptual way of artistic presentation of reality in Y. Kupala’s oeuvre, the author compares the poem “Son na kurganye” to other poems (“Razlad”, “Son”, “Syabroutsam na doli”, “Prystal k žit’..”, “Prarok”, “Uwies da dna”, “Viečarynka”, “Adviečnaya piesnya”, “Kurgan”, “Yana i ya”, tragycomedy “Tuteyšija”).