This paper examines the development and implementation of digital sports museums, leveraging Virtual Private Network (VPN) technology to enhance the dissemination of sports culture and promote public fitness. As global awareness of health and fitness grows, there is an increasing demand for accessible platforms that encourage active lifestyles and provide rich cultural content. Digital sports museums meet this need by offering virtual access, overcoming the geographical limitations of traditional museums. The integration of VPN technology ensures secure and private data transmission, fostering user trust and engagement. By encrypting user interactions, VPNs protect personal information and enhance platform reliability, encouraging broader participation. The study highlights the effectiveness of digital sports museums in optimizing user experience through advanced technical architecture and interactive features. Cloud infrastructure and containerization ensure seamless access across various devices and network conditions, while interactive elements like virtual tours and quizzes actively engage users, promoting deeper cultural appreciation. Additionally, digital sports museums facilitate global sports culture exchange and support public fitness initiatives by offering educational resources through online platforms. The research underscores the potential of digital sports museums to contribute to the sustainable development of sports culture, providing a model applicable across various cultural domains.