Abstract: Against the backdrop of deep integration of digitalization and intelligence, traditional reading promotion faces challenges such as monotonous formats and limited dissemination, while the preservation and revitalization of China's outstanding cultural heritage urgently calls for innovative approaches. This paper takes the ancient poem and musical composition A Moonlit Night on the Spring River as the research subject, and explores the technical pathways and practical impacts of generative artificial intelligence (AIGC) in enabling multimodal reading promotion. By constructing the audio-visual project Spring River Legacy: Inheritance of Ancient Melodies, the study proposes a “text-image-video” multimodal transformation framework. Through techniques such as AIGC image generation, video generation scenarios, and prompt engineering, the research achieves dynamic visualization of ancient poetic scenes and audio-visual synesthetic expression of musical emotions. The research finds that AIGC technology can break through the spatiotemporal constraints of traditional reading promotion, enhance user immersion through multisensory experiences, and facilitate the revitalization and dissemination of cultural resources. Simultaneously, its personalized creation model lowers professional barriers, stimulates public enthusiasm for cultural production, and demonstrates significant advantages in boosting reading interest and communication efficiency, offering innovative insights for cultural transmission and inheritance in the digital age.