Abstract: In the context of high-quality development, urban and rural renewal has evolved from mere material space revitalization to a more diversified approach encompassing functional collaborative governance. As pivotal units in urban renewal, metropolitan rural regions, characterized by historical complexity and functional diversity, must prioritize multi-functional integration and spatial collaborative development in the current era. Taking Chaoyang Village, located in Huaxi District, Guiyang City, Guizhou Province, as a case study, this paper introduces the concept of 'polymorphism' to metropolitan rural regions renewal. It analyzes the prevalent 'polymorphism' issues, elucidates the underlying mechanisms, and proposes a 'polymorphism'-based collaborative renewal pathway structured around three levels: elements, structure, and function. This pathway encompasses integrating and updating elements and spatial textures, fostering internal and external coordination and regional planning, and aligning with urban patterns and regional development goals. The aim is to facilitate coordinated and multifaceted development of metropolitan rural regions.