Abstract: The rapid development of digital information technology and mobile internet technology has promoted the vigorous development of new media communication. The rapid development of new media has brought huge impacts and changes to the media industry, as well as new opportunities. It will inevitably provide a new opportunity for the publicity work of disaster prevention and reduction. The use of mobile terminals such as mobile phones, computers, tablets and Internet platforms to promote disaster prevention and reduction has become the most popular and accepted way for audiences, and it is also the most effective way of dissemination. Therefore, exploring the content of communication in the context of digital media, clarifying the order of communication, analyzing its communication effects, and determining communication strategies are key issues in media research today. Based on the current digital media context, this article will conduct an in-depth study on its propaganda strategies in the field of earthquake prevention and disaster reduction.