Dunsinane is a postmodern rewrite adapted from William Shakespeare’s play Macbeth by David Greig. This article mainly deals with the problem that specifically, how Dunsinane is rewritten from Macbeth. The article firstly analyzes from rhetorical perspective that irony, the frequently-used literary device in Macbeth is also a prominent rhetorical strategy of rewriting in Dunsinane. The restructuring of the characters Macbeth, Malcolm and Siward from Scottish perspectives as well as the the restructured theme behind the rewrite are also introduced.