The innovative application of smart proactive health services is an important component of the Healthy China initiative and an effective measure to satisfy the diversified health needs of the public in the post-epidemic era. This study focuses on building a new paradigm of smart proactive health services and aims to improve proactive health intervention and management capabilities and provide high-quality health services for the public. It analyzes the current status and challenges of proactive health services, summarizes the smart development trend, and proposes the concept of smart proactive health services. Moreover, the study constructs a technical system of smart proactive health services using a structured analysis method, establishes an application framework consisting of one center, one portal, and three endpoints, and proposes a construction ecology featuring internal and external collaboration. The application scenarios and practical cases of the smart proactive health services are summarized in terms of technology integration and smart application. Furthermore, we propose the following suggestions to promote the sustainable and high-quality development of smart proactive health services in China: (1) strengthening macro policy tools to improve the development environment; (2) improving the public's digital literacy to reshape the atmosphere for service participation; (3) building a service standards system to improve the internal digital ecology; (4) creating a multiple supply pattern to continuously improve service quality; and (5) accelerating the integration of industry, academia, research, and application to enhance the commercialization of research findings.