Abstract: The representative novel of Slaughterhouse-Five written by the American postmodern writer Vonnegut is a text with high carnivalization. In terms of artistic thinking, character image, structure and language as well as time and space, it embodies the distinctive Carnival artistic characteristics. Slaughterhouse-Five is totally conversational, subverting the official authority with folk discourse and applying the decrowning structure, reflecting the spirit of freedom and equality and the spirit of alternation.