[Objective] An ecological security pattern with urban characteristics was constructed in order to provide ideas for regional coordinated development of ecological environment protection and restoration of Ji’nan City, Shandong Province, and to provide references for constructing an urban characteristic ecological security pattern for a mountain-water-forest-farmland-lake-grass-spring system. [Methods] Habitat quality was evaluated for Ji’nan City based on the InVEST model, and the ecological sources were identified from the three perspectives of blue-green-spring. A resistance surface was subsequently constructed based on the natural geographical conditions and human disturbance. Finally, the ecological corridors were identified and the ecological security pattern was constructed using the minimum cumulative resistance model (MCR). [Results] The area of the ecological sources in Ji’nan City was 1 249.32 km², accounting for 12.20% of the total area. The ecological resistance surface presented the characteristics of “high in the middle, low in the north and south, and many clusters”. 119 ecological corridors with a total length of 1 395.37 km were identified, and formed a mountain-river corridor connecting Mount Taishan in the south and the Yellow River in the north. The area of the high, medium, and low ecological security buffer zones in Ji’nan City accounted for 40.41% of the total area, and an ecological security pattern of “one belt, three zones, two wings, nine points, and multiple corridors” was constructed. [Conclusion] The ecological source areas of Ji’nan City are mainly scattered in the southern mountainous areas. The crisscrossing rivers serve as natural corridors for communicating material and energy information.