With the full realize of the new curriculum innovation in middle schools, the application of multimedia plays an increasingly significant character in the territory of education. In this paper, the advantages of multimedia apply in sport education are analyzed, and the design of APP in sportunterricht based on teaching experience is divided into two parts: digital content and software. Digital content is generally divided into: video production, graphic design, three-dimensional modeling. Software is divided into interactive software, central control software, VR/AR/MR, UI interface. By playing more wonderful multimedia, students’ interest in study and awareness of learning can be improved. Students are enlightened while enjoying, which improves the teaching effect of sport education better. The experimental consequence show that the application of audio-visual media and computer teaching in sport education teaching can enhance students’ interest in learning, deepen students’ understanding and image of specific actions, and play their part in promoting the development of students’ basic knowledge of sports education, the renewal of sports concepts, the improvement of sports skills and the improvement of thinking quality.