Poetic Metaphor put forward by Lakoff and Turner lacks the clear definition. This article redefines the notion and clarifies the differences and connections between Conceptual Metaphor and Poetic Metaphor. Accordingly, it induces three properties of it, including dynamicity in staticity, complementation as well as innovation and creativity. Based on the Relevance Theory, this study constructs the model of the poetic metaphor in novels and applies such model in Alice Munro’s short story collection Dear Life. This study not only expands the applying scope of the Relevance Theory, but also provides a neo-model of novel interpretation for readers.