As the visual carrier of national image in sports discourse，sports movie posters are one of the manifestations of national sports image. This paper takes sports movie posters as the research object and tries to explore the significance and value of sports movie posters in the process of national strategic communication by using the theory of multi-modal discourse analysis. The study finds that：with the help of multi-modal visual symbols，visual color and visual space，sports movie posters complete the conceptual narrative，relationship narrative and composition narrative in sports movie stories，presenting the national will and sports image in different historical periods. Regardless of the historical stage，the national will has never been absent from the visual narrative of sports movie posters. Fundamentally speaking，the explicit representation of sports movie posters reflects the implicit political power and discourse discipline.