Correctly considering the trade-off and synergy between urban construction development and ecological security, and rationally demarcating the use level of urban ecological space is fundamental to promote ecological environmental protection and civilization construction. This study analyzed the main urban area of Jinzhong in Shanxi Province. It evaluated the sensitivity of the ecological environment in study area regarding biodiversity conservation, natural disaster warning, and human disturbance. A CA-Markov model was used to simulate the evolution trend of the land to propose the ecological division of the study area. On this basis, combined with the existing urban planning, corresponding control measures and suggestions were proposed for each district, to provide a reference for optimizing the ecological space planning and ensuring its ecological security.