Health policy reforms often fail due to design flaws, implementation gaps, and political barriers. This paper examines the role of government stewardship in addressing these barriers drawing on lessons from healthcare reforms in Sanming, China, a city that has become a nationally recognised model for comprehensive health system reform. Employing a qualitative approach, the analysis traces how six core stewardship functions – strategic visioning, institutional alignment, instrument design, partnership management, accountability reinforcement, and learning facilitation – enabled Sanming’s government to control costs and improve service delivery and health outcomes. Sanming’s experience illustrates the potential for local government stewardship to catalyse reform in the face of constraints. Interviews indicated that strengthened stewardship enabled the government to set strategic direction for the health system, mobilise stakeholders, formulate workable policies, and adapt to changing needs during implementation. However, participants identified persistent challenges, including uneven distribution of capacity across agencies, changes in the external policy environment, and deficient stakeholder feedback loops. While specific to the local context, the core stewardship competencies identified in the paper offer a generalisable framework for strengthening reform governance in other settings. As countries seek to build resilient and equitable health systems, the lessons from Sanming’s stewardship model provide a timely contribution to the global health reform discourse.