Abstract: Under the strategy of Building a Leading Sports Nation, the research on the market supply of youth sports services is of great significance to the development of youth sports. Taking spatial justice as the theoretical perspective, this paper uses literature review and logical analysis to explore the role positioning and function transformation of various stakeholders in the process of spatial reconstruction of youth sports services with marketization as the core, address the rationality of spatial rights allocation, and discuss the optimization path of market-oriented reform of youth sports services. The market supply of youth sports services faces problems such as the failure of the governance responsibility mechanism, the relatively weak position of the market, the misallocation of market resources, and the lack of demand-side governance. The optimization of market supply requires the coordinated participation of the government and social organizations, more opportunities for the occupation and distribution of spatial resources, and a complete institutional system to regulate the operation of space power. Enhancing the coordination mechanism of government and organizations, building a market supply support system, optimizing the market governance system, and cultivating a healthy domestic demand system are the main paths to improve China's youth sports service supply system and optimize the supply of youth sports service market.

Key words: spatial justice, youth sports, market supply, path optimization