In the context of China's national rural revitalization strategy and cultural tourism integration policies, public cultural facilities serve as carriers for both cultural revitalization and industrial development, with their construction standards directly affecting regional sustainable development capacity. This paper focuses on the structural dilemmas facing rural public cultural facilities in Southern Shaanxi: inadequate and imbalanced facility supply, insufficient resource conversion efficiency, and rigid operational management mechanisms. It analyzes the underlying causes, including the region's singular industrial structure, limitations of government-led models, and the absence of pathways for transforming cultural productivity. The research innovatively proposes a four-dimensional collaborative mechanism of "culture-facilities-industry-people" and constructs a theoretical framework for cultural tourism integration. Through systematic analysis of Southern Shaanxi's distinctive cultural resources and tourism elements, the study presents a four-fold optimization approach: spatial quality enhancement, cultural refinement, industrial upgrading, and management revitalization. The research findings provide theoretical foundations for resolving the inefficiency predicament of rural public cultural facilities in underdeveloped regions, aiming to narrow urban-rural disparities and activate regional economies. This work offers practical insights for innovative models of cultural tourism integration under the rural revitalization strategy.