Digital museums as a concentrated display of digital technology empowering the cultural heritage sector have changed the way in which cultural resources are conserved, interpreted, and disseminated. They have also become an indispensable part of the global cultural sphere. This study intends to present the paradigmatic characteristics systematically that differentiate digital museums from traditional museums and to forecast some future trends of digital museums. According to the literature analysis, the core characteristics of digital museums are reflected in the following three aspects: interaction, which stimulates audience participation through touchscreens, VR/AR, and other human-computer interaction technologies to create an interactive and personalized experience; global access, which breaks through the geographical and physical limitations and greatly promotes democratization and popularization of cultural resources; and multimedia convergence, which combines video, animation, and game elements to enhance audience participation through interactive storytelling. In the future, the personalized guiding tour will be realized based on AI; the whole experience will be more immersive with the application of XR; blockchain can be used to authenticate rights and fight counterfeiting; and it will become even more useful for social and educational purposes by cooperating with schools. This paper concludes that the healthy development of digital museums depends on how to properly resolve the inherent tension between technological rationality and humanistic values. Although faced with many challenges, through the continuous convergence of technology and innovation in the paradigm, digital museums will play a more important role in democratizing knowledge, promoting cross-cultural communication, and protecting historical heritage.