Abstract:The coupled Human-Natural System thinking is considered as an important theoretical basis for territorial ecological restoration. The relationships between ecological space, production space, and living space show three evolution stages in territorial governance: coordinated arrangement, systematic governance, and human-nature harmony. In this regard, coupled Human-Natural System research is necessary to set the perspectives of coupling indicators, coupling hierarchies, coupling effects and coupling models to identify the primary evaluation indicators, delineate hierarchical nested regions, decouple the spatio-temporal relationship of socialecological effects, and develop human-natural coupling models, so as to systematically support the territorial ecological restoration and facilitate the national and regional high-quality development.