Constructing the external communication discourse system of Chinese modernization is a significant and urgent contemporary challenge proposed by the Party and the state. This challenge arises from the context of the “domestic and external situations” intertwining and interacting, where the value of civilization is unprecedentedly prominent, the interaction between civilizations is crucial, and dialogue among civilizations is timely. It aims to build China into a modern socialist country in all respects to achieve the rejuvenation of the Chinese nation through Chinese modernization. The external communication discourse system of Chinese modernization is responsible for telling the story of Chinese modernization to the world and responding to the doubts of the international community. It is also a key system to demonstrate China’s confidence in its system, path, theory and culture. For a long time, some western countries have long adhered to the “western-centrism hierarchy of civilizations”, and their discourse myth of “difference=inequality=superiority” tries to bring the world modernization into the track of “westernization” , which has brought great challenges to the construction of the external communication discourse system of Chinese modernization. However, with the profound changes in the international landscape and the ongoing realignment of international power, the world is beginning to reconsider the restructuring of the modernization landscape, and more and more countries are paying attention to China. This provides an opportunity for the construction of the external communication discourse system of Chinese modernization. Facing the strategic opportunities and challenges presented by the times, constructing the external communication discourse system of Chinese modernization is to draw confidence and confidence from the guiding power of Marxist theory, the nourishment of Chinese civilization, and the lofty value guidance of the Communist Party of China. After integrating the three key elements of subject positioning, content output, and narrative guidance. We aim to construct a scientific core for the external communication discourse system of Chinese modernization through rigorous logic, highlight its rich connotations through distinctive texts, and enhance its dissemination effectiveness through diverse techniques. Our goal is to create a discourse system that can touch, attract, and inspire people.