In this offered reconstruction of the Slavic myth about Jarilo and Marzanna, a comparative method is used, where lost fragments of one ethnic myth are reconstructed with the use of similar myths that were preserved, relating to Indo-European ethnic mythological traditions. Greco-Roman, Iranian, Indian Vedic, Celtic, Germanic mythical narratives, viewed in context of the common, original Proto-Indo-European tradition, allow us to look at this well-known, but highly fragmented myth from a new, more integral prospective.