The mining of coal resources has great damage to the ecological environment. In order to accurately grasp the inducing factors and development rules of coal mining cracks and predict the development grade of cracks, an evaluation model of mining ground cracks development grade was established based on analytic hierarchy process (AHP) and fuzzy comprehensive evaluation method. According to the engineering conditions, the appropriate evaluation index system was determined, the weight of each evaluation index was determined according to the AHP, and the membership function was constructed by fuzzy mathematics method. Taking 80806 and 80808 working faces of a coal mine as the research background, the fuzzy comprehensive evaluation of the development of ground cracks was carried out. The results show that the development of surface cracks above the working face matches well with the evaluation results of the proposed evaluation method. It shows that the evaluation method is suitable for the grade evaluation of mining-induced ground cracks development in this coal mine, and the evaluation results have a certain guiding significance for the evaluation of mining subsidence damage degree.