Abstract: Ecological civilization construction is fundamental to the sustainable development of the Chinese nation, and has become an important part of the “Five-sphere Integrated Plan” for building socialism with Chinese characteristics. As the largest mid-river green island in the upper reaches of the Yangtze River and an ecological island in Chongqing, Guangyang Island has immeasurable ecological value, and the ecological transformation thereof from excessive development to well-coordinated ecological conservation has been a vivid practice of ecological civilization construction under the guidance of Xi Jinping thought on ecological civilization. This research carries out exploration and innovation in all such aspects as theory, planning and practice. In theory, it extracts the theory of optimal value life community, the theory of ruralization, and the theory of “double gene integration and double spiral development” in intelligent ecology; in planning, it establishes the model of “ecological planning graph” based on exploration; in practice, it systematically summarizes the experience in ecological civilization construction from such dimensions as mechanism guarantee, systematic policy implementation, ecological construction and technology integration. All these explorations have achieved great demonstration effects, which can provide a reference for territorial spatial ecological restoration and demonstrative green development of the Yangtze River Economic Belt in a new era of ecological civilization.