Abstract: The development of outdoor sports is a vital strategy for fostering new economic growth drivers and converting ecological advantages into economic prosperity. However, despite rapid expansion, the sector faces a growing issue of homogenized resource development, which hampers the full realization of its consumption-driven growth and spillover potential. Grounded in institutional isomorphism theory, this study employs literature review, case analysis, and logical reasoning. By comparing two cases: Case A (an international RV campground) and Case B (an ecotourism resort), it aims to identify the manifestations and analyze the causal mechanisms of homogenization in outdoor sports resource development. Furthermore, it proposes targeted solutions by drawing on the differentiated development experiences of sites like the Gaolan Chaotianhou Drift Scenic Area and the Lücongpo Ski Resort. The study finds that coercive, mimetic, and normative isomorphic mechanisms propel outdoor sports resource development toward convergence in its project design, visitor services, and experiential offerings. This occurs as developers adopt standardized approaches to ensure organizational survival and expansion. To transition from homogenized development to differentiated supply, this study suggests adopting development models led by distinctive projects or empowered by local resources. Key pathways include refining flexible policy frameworks, optimizing location-sensitive development mechanisms, and exploring cross-sector integration.