Abstract: At present, the studies of the carrying capacity of resources and environment are mostly focused on the regional scale, while the study of the county scale is relatively less. Inviewof such a situation, the authors chose Yixing City as an example, and established the system of assessment index from two aspects of carrying background and actuality, and carried out the evaluation of geo-resources and environment carrying capacity inthree aspects:geological resources, water and soi environment and geological safety. The evaluation provicies support and reference for the technical specification on the evaluation of geological resources and environmental carrying capacity at the county scale. The evaluation results show that the carrying capacity of geological resources in southern hilly and mountainous areas is higher than that in northern plain areas, while the carrying capacity of geological safety is lower than that in northern plain areas.The carrying capacity of soil and water geological environment is generally of medium level.It is suggested that the protection of resources and environmental and the prevention of geological disasters should be strengthened in southern areas of Yixing City, and that emphasis should be placed on prevention and control of water and soil pollution in central areas.The evaluation results provide a scientific basis for the rational use of geological resources and geological environment security in Yixing City.