The ecological restoration of land space is the key and difficult point in the comprehensive restoration of mountains， rivers， forests， farmland， lakes and grasslands.This study can provide a methodological reference for the systematic identification and restoration of key areas of ecological restoration areas in territorial space through the construction of the ecological security pattern in the study area and the identification of key restoration areas.Based on the diagnosis of ecosystem problems and the construction of ecological security pattern， this paper explored the method and path of identification and restoration of key areas of ecological restoration in territorial space. The Caidian District of Wuhan City was used to systematically diagnose the degree of degradation，the type of degradation and the spatial distribution of ecosystem from three aspects including quantity，quality and spatial pattern. Based on the identification of ecological sources，the ecological resistance surface is constructed with five factors of land cover type，distance from water area，vegetation coverage，slope and altitude，and potential ecological corridors are identified by constructing the least resistance model，and then the ecological security pattern is constructed.On this basis，ecological conservation area，natural restoration area，artificial restoration area and ecological corridor construction area in Caidian District were systematically identified by integrating the diagnosis of ecosystem problem with requirements of ecological security pattern. 1 901.52 hm2 forest land and water bodies were extracted as ecological sources，18 168.12 m potential ecological corridors were identified.Corresponding ecological protection and restoration measures were proposed from four aspects above.