Abstract: Aiming at the risk issues caused by the complex geological environment in Xinshun Coal Mine Area,the TOPSIS multi-criteria decision model is adopted for risk assessment.By analyzing key factors such as geological stability,groundwater level,fault density,mining depth and others of the mining area,a standardized decision matrix is constructed and weighted scores are calculated to classify the risks of the mining area.According to the comprehensive scores,the mining area is divided into high,medium,and low risk levels,and corresponding risk prevention and control strategies are set:high risk areas （0≤C_i＜0.30） need to strengthen geological monitoring and emergency plans,medium risk areas （0.3≤C_i＜0.7） need to optimize mining processes,and low risk areas （0.7≤C_i≤1） can be managed routinely.Through sensitivity analysis,the stability of the model under different weight settings is verified,and the grading results are consistent with the historical data.This method provides a scientific basis for geological environmental risk management in mining areas,can effectively identify high risk areas,guide safety management and risk control in mining areas,and ensure safe mining and environmental protection in mining areas.