In order to select the optimal geological suitability evaluation model of underground space resources, realize scientific and reasonable evaluation of underground space resources, and provide reasonable planning support for underground space development. In this paper, three different models are selected for comparative analysis, and their advantages, disadvantages and applicable conditions are summarized, and the geological suitability evaluation of underground space resources is evaluated by taking Nanshan District of Shenzhen as an example, and the zoning map of geological suitability evaluation of underground space resources in Nanshan District is generated by ArcGIS. The evaluation results show that the evaluation model of the most unfavorable grade discrimination method is more suitable for the geological suitability evaluation of Nanshan District, highlighting the restrictive effect of sensitive factors on the development of underground space in Nanshan District. This paper has a certain reference significance for the future model selection of geological suitability evaluation of underground space resources, and provides a certain reference for the planning of underground space in Nanshan District, Shenzhen City.