Promoting the sharing of high-quality medical resources is a major strategic initiative in China's healthcare sector, with digital health technologies emerging as a key facilitator in realizing this goal. In this paper, we examine the strategic values of digital health technologies in overcoming spatial barriers to healthcare access, optimizing resource allocation, and strengthening the capabilities of primary healthcare institutions. Representative applications of digital health based on technologies such as Internet platforms, mobile communication, big data analytics, artificial intelligence, and blockchain are discussed. However, several key challenges hinder the application of digital health technologies in advancing the sharing of high-quality medical resources, involving issues related to the supply, demand, and distribution of these resources. These challenges specifically include limited capabilities of primary healthcare institutions, underdeveloped digital security systems, low levels of digital health literacy among the public, and the complexity of the resource distribution process. In response, a comprehensive set of development strategies is proposed to advance the sharing of high-quality medical resources through digital health technologies. These strategies encompass five key areas: enhancing policy coordination and planning, improving digital infrastructure, deepening the integration of digital health technologies, supporting the development of primary healthcare institutions, and expanding access to digital health services. Collectively, these strategies provide theoretical foundations and practical guidance for promoting the collaborative sharing of high-quality medical resources.