This paper explores the evolution and strategies of international communication of China’s political discourse since 2012, within the context of a new era. It begins by reviewing the current state of research in the field, laying a theoretical foundation for subsequent analysis. The paper then delves into the distinct characteristics of China’s political discourse in the new era, highlighting its uniqueness and influence in the process of globalization. At its core, the study examines the practical application of the “5W” model in the international dissemination of China’s political discourse in the new era—comprising Who (communicator), What (content), Why (motivation), Whom (target audience), and How (method). This highlights the significance of the model in enhancing communication efficiency and effectiveness. Through an in-depth analysis of various case studies, the flexible application and practical relevance of the “5W” model in real-world scenarios are demonstrated. The paper summarizes the achievements and challenges of international communication of China’s political discourse in the new era. It underscores how, under the guidance of the “5W” model, more precise targeting of communication objectives, optimization of content, enhancement of international image, and addressing the complexities of the global public opinion environment can be achieved.