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Green ecological space network is an important research content of landscape ecology and an important bridge coupling landscape pattern, ecological process and ecological function. It is of great significance for improving landscape connectivity, protecting species diversity, and promoting the integrity of ecosystem structure and function. This paper combs the research context of the green ecological space network, discusses the concept and characteristics of the green ecological space network, related theories and research methods, and elaborates the related concepts and development process of the green ecological space network. It is in the process of construction, analysis and optimization. The common methods and main characteristics of the green space network, as well as the relevant theories in the research of the green space network, enumerate the main application areas of the green ecological space network, such as urban, hydrology, wind and sand fixation, soil and water conservation, etc., and the basic changes and research methods of the green ecological network, scale research and integration with other spatial networks and other aspects.