Abstract:In the context of stock optimization and sustainable development, this study explores pathways for enhancing urban streetscape quality through sports event-driven initiatives, taking the 15th National Games of the People's Republic of China as a case study. By integrating literature analysis, comparative case studies, and participatory action research, a theoretical framework is proposed, articulating four transformative dimensions: conceptual paradigms, spatial configurations, functional adaptations, and value propositions. The research systematically examines Guangzhou's practices in urban quality refinement and delicate neighborhood construction, revealing four operational mechanisms: The 'city-venue symbiosis' strategy eliminates spatial segregation between event venues and urban blocks through reconstructed pedestrian networks and integrated public space systems; The 'dual-use infrastructure planning' approach facilitates the transformation of competition facilities into community-based fitness hubs, establishing a 10-minute active living sphere; Prioritizing urban quality improvement in the key riverside areas along the Pearl River to guide urban development; Creating new urban branding through 'eventcultural tourism integration', developing innovative paradigms that synergize cultural, commercial, and tourism elements.