For complex mining geological environment systems, in order to reduce human subjective influence and perform quantitative evaluation, taking the oil shale-kaolin mining area in Maoming City as an example, 12 evaluation factors under three elements—natural geography, basic geology, and mining environment—were selected as evaluation indicators to construct an evaluation system and grading standards. The weights of each evaluation indicator were determined using the Analytic Hierarchy Process (AHP), and a comprehensive evaluation model was developed by combining Fuzzy Comprehensive Evaluation (FCE) to assess the mining geological environment. The secondary evaluation results show that the natural geography, basic geology, and mining environment were rated as "poor," with major issues including the destruction of geomorphological landscapes, land resource degradation, and geological hazards.? The primary evaluation results indicate that the overall mining geological environment of the study area is rated as "poor." The evaluation results are consistent with the actual situation and can provide a basis for subsequent mining geological environment management and ecological restoration.