This paper explores the Art Nouveau elements implicit in Debussysme in light of the three Art Nouveau motivations in the allegorical aethetics of Benjamin's historical materialism: hieratic, perversion, and emancipation. By examining 1) the nature of Debussysme, 2) Benjamin's three Art Nouveau motivations, and 3) the Art Nouveau elements in Debussy's music, this paper reevaluates the nature of Debussysme in light of Benjamin's aesthetic theory. At the same time, the goal of this paper does not lie in offering a final answer to this most perplexing question, but rather in applying the perspective of allegorical aethetics in reevaluating the style of music at the end of the nineteenth century, thereby reaching an understanding of the historical meaning of Debussy's musical language in light of the overall French Art Nouveau movement of the day.