Construction of a regional ecological security pattern provides an important path to enhance ecosystem service, while the coordination of various ecological elements for ecological protection and restoration zoning is also an important initiative for better ecological restoration in the new epoch. Taking Jinan city as a case study area, we focus on the basal characteristics of regional ecological environment and geohazard sensitivity based on the current spatial ecosystem distribution, the ecological source area was extracted based on Morphological Spatial Pattern Analysis and nature reserves. In addition, summer precipitation, vegetation coverage and slope three geohazard sensitivity factors were used to modify the basic ecological resistance surface, and the ecological corridors were identified using Least-Cost Path method (LCP), and as a result, the ecological security pattern of Jinan City was constructed. by the application of circuit theory, critical areas of ecological restoration (ecological pinch point and ecological barrier point) were identified and further demarcated into three different ecological restoration zones, for which targeted ecological protection and restoration strategies and engineering measures were proposed towards those restoration zones. Results indicate that there were 35 ecological sources and covered an area of 567.15 km², and the main ecosystem types were forestland and grassland. Those sources were mainly distributed in the southern mountainous. The ecological corridors with a total of 1548.36 km between them, and the average length of the corridor was 12.99 km. All of them constructed a "one screen, one belt and three axes" ecological security pattern. Key areas of ecosystem preservation and restoration were identified based on the circuit theory, including a total of 25 ecological pinch points, 34 ecological barrier points, and 6.90 km² of it, and the pinch and barrier points mainly distributed in the Licheng and Zhangqiu District, respectively. A total of 2994.84 km² of ecological improvement areas have been identified, with 96.1 km² in urgent need of restoration soon, mainly distributed in Changqing, Licheng and Laiwu District. Suggestions of restoration and direction of engineering measures were proposed, with a combination of the spatial ecological characteristics and land use types. The results of the study provide some technical supports for the territorial spatial planning and ecological protection and restoration in Jinan and also provide scientific guidance for other geohazard-sensitive areas.