Against the background of the in-depth advancement of the education digitalization strategy and the collaborative implementation of sports-education integration and aesthetic education, sports dance in colleges and universities—a featured program integrating sports competition, artistic aesthetics and social attributes—serves as an important carrier for enriching campus sports culture and improving students’ physical, mental and aesthetic qualities. At present, the promotion of sports dance in Chinese colleges and universities generally faces practical dilemmas such as single communication channels, biased audience cognition, insufficient after-class learning support and unbalanced resource supply, which are difficult to adapt to the digital living habits and diversified learning needs of college students in the new era. With short videos, live streaming and new media matrixes as core carriers, digital new media communication, characterized by multi-modal presentation, strong interactive experience, wide coverage and low participation threshold, has become an effective approach to solving the difficulties in promoting sports dance in colleges and universities. Using the methods of literature review and logical analysis, and combined with relevant national policies on education digitalization, this paper systematically analyzes the core value of digital new media communication in empowering the popularization of college sports dance, explores specific practical paths from the two dimensions of content creation and communication mode, and puts forward three-dimensional guarantee strategies in terms of teachers, platforms and mechanisms. It provides theoretical references and practical guidance for the digital popularization of college sports dance and promotes the high-quality development of college sports aesthetic education.