Vonnegut intended to write this novel as anti-war novel. He wanted everyone who read this book to know just exactly how bad war is. He wanted people to know the mental scars that war can carry. And he wants people to know the atrocities of war, and that it should never happen again. Although this novel deals with these heavy and sincere themes, it is not dark and boring but humorous and interesting. This effect is caused from Vonnegut`s unique use of irony. In this novel, irony is used not only in technique but in meaning and the author`s message. So, this paper is to investigate the characteristics of irony of this novel and to comprehend the meaning and the message on the point of ironic view. In characteristics, the irony in this novel has several elements. First, it implies the comic elements with black humor. Second, this irony is tempered with sentimentality. Third, it produces the unexpected effect by interweaving unrelated events and objects. Finally, it has tensed elements to maintain the thoughtful balance with the comic relief. This novel can be analyzed with story-telling on the point of ironic scheme. Vonnegut establishes the ironic situation collected with kinds of war and creates an ironic victim in that situation. Because he can not endure the absurdity, he escapes into the imaginative space to survive. But he returns to real life not having a serene life in transcendental space. With the use of irony, Vonngut gains the opposite effects that not only make serious contents lightened but give readers the insight to question the significance of the absurd universe in comic mood.