Abstract: Improving the public service system for national fitness is an important part of comprehensively building a modern socialist power. During the 15th Five-Year Plan period, the improvement of public services for national fitness is confronted with new situations such as the increasing health demands of the people, the in-depth advancement of multiple national strategies, the accelerated changes in the economic and social structure, and the rapid changes in digital technology. Based on the major deployment of improving the public service system for national fitness, its target vision needs to move from "fragmentation and dispersion" to "coordinated interaction", from "passive response" to "active prediction", from "resource consumption" to "innovation of new quality", and from "quantity priority" to "quality and efficiency improvement". Based on this, it is proposed to strengthen mechanism innovation to enhance the governance efficiency of public services for national fitness, focus on method renewal to unleash its supply momentum, stress scenario innovation to reinforce its integration function, and promote guarantee innovation to activate its development potential.