Abstract：The geological environment suitability evaluation of underground space development can provide strong technical support and reference basis for urban scientific planning and construction, which is of great significance. Combined with the geological environment characteristics of Wenzhou planning area, 14 evaluation indexes are selected from 4 aspects: engineering geological conditions, hydrological and hydrogeological conditions, geological environment conditions, ground and underground conditions. Analytic hierarchy process (AHP) is used to calculate the weight of each evaluation index, and the evaluation unit is divided by GIS software for human-computer interaction analysis. The results calculated by fuzzy comprehensive evaluation method are reflected in the suitability evaluation result map. The evaluation results show that, About 60.8% of the shallow underground space is suitable for development, 2.6% of the shallow underground space is sub-suitable, 30.6% of the shallow underground space is generally suitable, and 6.0% of the shallow underground space is poor suitability; About 32.2% of the middle underground space is suitable for development, 39.2% of the middle underground space is subsuitable, 20.4% of the middle underground space is generally suitable, and 8.3% of the middle underground space is poor suitability.
