Abstract: The issue of national fitness in China faces multiple demands, namely, Healthy China construction, sport power construction, and high-quality development of sports industry. On the basis of the development of national fitness in "The Thirteenth Five-Year Plan", the internal and external development environment of the future is explored, trying to find out the national fitness development in the new period in the aspects of development ideas, goals, tasks and policy measures. The results show that the key tasks of the development of national fitness in the future should be to strengthen the sports fitness behavior intervention of key groups, build a higher-level public service system for national fitness, establish a new mode of sports promoting health with the integration of sport and medicine, vigorously promote the modernization level of national fitness governance, and comprehensively advance the intelligence development of national fitness, plus the guarantees in organizations, policies, talents, technology, monitoring and evaluation, etc.