This study focuses on the increasing use of street dance programs in local festivals and aims to identify the background of their growth, utilization effects, and future directions based on the experiences and perceptions of street dance professionals. Semi-structured in-depth interviews were conducted with eleven experts involved in festival planning, judging, and performance, and the data were analyzed through open, axial, and selective coding. The findings indicate that the growth of street dance in local festivals was driven by increased media exposure and the development of community-based professional networks. These factors contributed to regional revitalization, audience expansion, broadening the cultural base of street dance, and the formation of compensation structures. However, structural limitations were also identified, including poor performance environments and gaps between festival operation systems and genre-specific expertise, which hinder sustainability. This study demonstrates that street dance functions not merely as performance content but as a participatory cultural resource within local festivals. Furthermore, it highlights the need for stable financial support, collaborative systems with specialized personnel, and long-term operational strategies.