Under the backdrop of industrial and urban transformation and upgrading in the new era, the development of industrial parks in China is facing a dual transition in both industry and city. Through over four decades of evolution, industrial parks have gradually developed into industrial communities characterized by multi-faceted industrial positioning and integrated functional models. Aiming to construct an industrial ecosystem, this paper explores three dimensions of industrial communities—self-organization, adaptability, and sustainability—and examines two representative case studies: Anji “Two Mountains” Dream Industrial Park and Haining Juanhu Sci-Tech Innovation Park. It summarizes specific strategies such as cluster organization, composite sharing, flexible boundaries, modular layout, respect for nature, and ecological restoration, to foster symbiosis, sharing, circulation, and evolution within industrial communities. The study provides a theoretical framework and sustainable practical pathways for the future development of industrial communities.