The fiction work of Kundera tends to unite philosophy, narrative and dream, so the metaphorical dreams play a significant role in his writing. In early works, the dream narrative was used as ”polyphonic confrontation” and ”one of the elements of counterpoint,” and in later works, the oniric narrative structures appear to be a pivotal point of his novels' construction and Kundera thus fulfilled his ambition formulated as ”the fusion of dream and reality.” He found in the dreamlike narrative ”the wisdom of uncertainty”, that he considers as the spirit of modern novels. In this article, on the basis of the analysis of Kundera's major works, we will inquire the functions and reasons of dream-narrative in his narrative strategy.