The formulation and implementation of medium- and long-term national economic development plans represent a pivotal governance approach of the Communist Party of China, embodying the country’s institutional strengths and systemic confidence. As 2025 marks the crucial transition from the conclusion of the 14th Five-Year Plan to the blueprinting of the 15th Five-Year Plan, medium- and long-term planning publications—which serve as key carriers for disseminating national strategies and highly specialized thematic publications—gain unprecedented significance. This paper, utilizing literature analysis, case studies, and expert interviews, delves into the content, characteristics, supply status, and development pathways of these publications, aiming to provide theoretical foundation and practical guidance for their high-quality advancement. Medium- and long-term planning publications have evolved into a sophisticated system that aligns closely with China’s "national-provincial-municipal" three-tier planning structure and the four-category planning framework. In the digital era, these publications have expanded to include e-books, audio-books, and online databases, bridging top-level design with grassroots practice. These publications play irreplaceable roles in advancing national strategies. They act as authoritative channels for policy interpretation, clarifying strategic intentions, quantitative targets, and implementation pathways to ensure accurate transmission of central decisions to local governments, enterprises, and the public. Additionally, they maintain the continuity of strategic goals, documenting the evolution of five-year plans from the "First Five-Year Plan" to the present. Furthermore, they function as repositories of experience, analyzing case studies of major projects to inform future planning. Finally, they foster social consensus by translating complex policies into accessible knowledge, enhancing public participation in national development. However, the supply of these publications, predominantly in book form, encounters significant challenges. First, professional publishing resources are heavily concentrated among central publishers in Beijing, while local publishers and private entities face resource constraints, leading to a "central-strong, local-weak" disparity. Second, rigid administrative attributes in content creation inhibit innovation, resulting in overly formal language, uniform presentation, and delayed releases. Third, limited media integration, characterized by underdeveloped interactive digital formats and limited utilization of AI or VR technologies, restricts communication effectiveness. Finally, inadequate adaptability in international communication, including cultural and terminological disparities, hinders the global dissemination of China’s development strategies. To address these challenges, this paper proposes specific solutions. First, construct a hierarchical collaborative publishing ecosystem: central institutions focus on high-end policy interpretation, provincial publishers develop regionalized content, and private entities engage in popular science. Second, innovate content production mechanisms by encouraging collaboration between government, academia, and industry, streamlining review processes, and integrating AI for efficient editing. Third, foster integrated publishing by building a "planning big data platform, " developing VR/AR tools for immersive policy visualization, and creating a multi-level communication matrix for diverse audiences. Finally, strengthen international communication capabilities by establishing a precise translation system for Chinese governance terminology. These measures aim to enhance the role of medium- and long-term planning publications in supporting national development and enhancing China’s global discourse influence.