Abstract: Mining industry owns a high incidence rate of occupational diseases.According to the characteristics of mine enterprise's safety production, the occupational hazard evaluation system for underground mining enterprise is formed, and the multi-grade fuzzy comprehensive evaluation model of underground mining occupational hazards conditions is established based on fuzzy theory, showing the corresponding evaluation index, standards and weights.Application examples showed that this evaluation system quantitatively reflected the occupational hazards of mining enterprises from the various levels and the overall situation, which provides technical support for management of occupational hazards of mining industry.

Key words: Underground mine, Occupational hazard, Evaluation system, Multi-grade fuzzy comprehensive evaluation