Abstract: 　　Based on the analysis of 138 cases of coal mine accidents in the past 5 years, triggering factors of coal mine accidents are systematically analyzed, and an improved HFACS model is built which is suitable for coal industry. In addition, grey correlation analysis is chosen to analyze triggering factors of the coal mine accidents, the degree of grey incidence to each factor is calculated, and the importance of the triggering factors of coal mine accidents is determined. The incidence order of the primary causes is illegal operation, illegal command, safety oversight, poor safety production supervision, lack of safety education and so on. And it is concluded that the manager is the most important human factor, In the end, the suggestion of safety production is put forward according to the analytical result.