Resolution of the Central Committee of the Communist Party of China on Further Deepening Reform Comprehensively to Advance Chinese Modernization adopted at the third plenary session of the 20th Central Committee of the Communist Party of China states that "improving the institutions and mechanisms for advancing new urbanization". Healthcare security, as an important institutional arrangement to reduce the burden of medical treatment on the masses and enhance people's well-being, is of great significance in ensuring the free flow of labor factors, promoting coordinated urban-rural development, and achieving high-quality urbanization. In recent years, China has increased the connection and integration of cross-regional medical insurance systems, and made bold attempts in policy innovation, management innovation, and technological innovation. By improving the overall planning level, implementing local insurance participation, promoting direct settlement of medical treatment in different regions, and transferring and continuing medical insurance relationships, China has continuously met the portable medical security needs of cross-regional and cross-institutional migrant populations in the process of new urbanization. With the deepening of new urbanization, the persistence and family-oriented development of population mobility, and changes in employment patterns have put forward higher requirements for optimizing medical insurance policies. We need to further promote the optimization path from institutional linkage to institutional switching and even institutional integration and upgrading, relax the policy of local insurance participation, improve transfer and continuity, accelerate the level of overall planning, achieve the balance of medical insurance rights and responsibilities across regions, and promote the "full coverage and participation” of all types of floating population in the process of new urbanization.