The "Imagined Community" establishes the discourse mode of writing and interpreting the nation, so that the lost "national identity" in the pluralistic and complex social forces can be compensated in the imagination (narration) process, and a link between the macroscopic national narrative and the scattered daily life can be established. Starting from the theoretical context of imagining the nation, this paper uses the discourse analysis of People's Daily’s reports on overseas evacuation since 2000. The study fnds that the discourse of constructivist paradigm and primordialism work together to generate and visualize the national imagination, in order to “mark” the community. Therefore, the discourse of overseas evacuation has become a way of expressing national power and national consciousness. Through the heroic prototype narrative mode, the intertextuality strategy to construct collective memory, the conceptual metaphor of "Family-country integration" and discourse interaction, the expression of national affection and the cohesion of national identity can be realized.