Marvel Studios occupies a significant position in the global entertainment industry. Its success is attributed not only to its film content but also to its unique marketing strategies. This paper aims to analyze Marvel's digital marketing model and the synergistic effects across different media. Through case studies of Marvel Studios' marketing strategies, this paper explores its practices and achievements in social media, content marketing, and cross-platform collaboration. Furthermore, this paper examines relevant market data and user feedback, comparing Marvel's marketing model with other well-known brands through comparative analysis. The research finds that Marvel has successfully established a strong brand influence and a loyal fan base through precise digital marketing and efficient media synergy. This paper will help other enterprises understand how to use digital marketing and synergies to enhance brand value and market competitiveness, demonstrating the effectiveness of Marvel's digital marketing strategies in developing brand cohesion and achieving high returns.