Amid the unprecedented global changes of the past century and the overarching strategy of China's national rejuvenation, the role and significance of frontiers have undergone fundamental transformations. These changes necessitate the development of a border governance theory and discourse system with distinct Chinese characteristics. In this context, the digital revolution has provided timely solutions, leading to the emergence of the digital strong-border strategy. Building on an analysis of the era-specific demands for frontier governance, this paper elucidates the theoretical connotations of the digital strong-border strategy and explains the new frontier dynamics shaped by this approach. It further constructs the "physical-society-digital" ternary spatial theoretical framework of the digital strong-edge strategy. Subsequently, the paper delves into the inherent logic, key tasks, and the evolution of governance paradigms under the digital strong-border strategy. Building on the "2522" framework of Digital China construction, this paper proposes a practical pathway for implementing the digital strong-edge strategy. The proposed pathway emphasizes four key aspects: technological empowerment, strategic integration, innovation-driven development, and collaborative cooperation.