Identification of ecological restoration space is an important prerequisite for ecological restoration and reconstruction, and plays an important role in regional sustainable development and construction of ecological civilization. How to establish a scientific and reasonable evaluation index system, especially for policy decision-making and public preferences, has become a hot topic in ecology research. On the basis of systematically studying the theory of ecological spatial evaluation, this paper systematically constructs the identification framework of ecological restoration space, including the selection of evaluation objects, the principle of evaluation index screening, the main methods of index system construction, and the weight setting of evaluation index. According to the regional ecological evaluation, the paper emphasizes policy objectives and public preferences, and constructs 18 indicators from three aspects of ecological quality, ecosystem services and ecosystem health, which can comprehensively reflect the main characteristics of regional ecological space. It can provide references for the construction of spatial identification index system of ecological restoration at regional scale in China, and provide scientific basis for ecological restoration and reconstruction. The research also prospects the key development direction of regional identification of ecological restoration, which include strengthening the application of complex ecosystem theory, integrating social, economic and natural factors evaluation, and promoting the fusion and application of multi-scale evaluation results.