Jazz, as one of Toni Morrison's "Historical Trilogy", tells a tragic story happening in New York, Harlem in particular, in 1920s.As a "beloved baby" of the black music, Jazz initiates the overture of American new era.Jazz finds its full expression in all elements of black music:romance, freedom, fury, temptation, death etc.Modern, stimulating, sexual, and violent scenes are displaying on the stage of New York.Rationality has then given way to irrationality with Dionysus Spirit, which marks the birth of tragedy, however, Jazz has awaken Afro-Americans' repressed impulsiveness, thereby finding their ego in Harlem.This paper is intended to explore Morrison's unique black tragic aesthetics in Jazz in the view of Western tragic aesthetic theory.