Abstract: McEwan’s novel Enduring love shows the writer’s insight into human nature and penetrates depths of individual moral bottom line through obscure writing of the conflict between ration and false. With the employment of repetition, irony and the narrative circulation, the narrator indicates the tone of uncertainty over the crisis of ration and false, which colors the novel the feature of multiple heterogeneity. The heterogeneity is closely related to McEwan’s contradictory narrative intention. On the one hand, the grand narrative is highlighted with “scientific knowledge” and “rational thinking”; on the other hand, small narrative with the heterogeneous writing constantly deconstructs the legitimacy of grand narrative. It becomes the modern humanistic dilemma to think of the questions, as how to go beyond the individual powerless in the face of rational existence, and how to reconstruct the dialogue and harmony between individual and society.