Abstract: Fengtai county in Anhui province is a plain and hilly area.The main factors affecting the carrying capacity for geological environment are geological structure, mine geological environment, and soil and water quality.The paper completed carrying capacity assessment, monitoring and warning for geological environment in Fengtai county.The results show that, geological structure stability for four towns are stable region, other towns rough stable region; the risk of collapse of the mining area for nine towns are the high risk area, one town the central risk areas, others low-risk areas; safety of soil and water quality is overloading in Fengtai county.The early warning results show that, three towns is huge, six towns serious, Liuji town light and other no wanning.According to the evaluation results, the cause analysis was carried out and some countermeasures were put forward, such as strengthen investigation and assessment, monitoring and warning management, promoting comprehensive governance for collapse of the mining area, and strengthen monitoring and utilization of soil and water quality.