Abstract: It is very important to correctly understand the factors affecting coal mine work safety and their relative importance to the safety system. First, 18 factors divided into 5 categories were identified with the method of literature review and field research. Then, 300 employees from 2 coal mines were selected to carry out the questionnaire survey, and SPSS21.0 was used to analyze the questionnaire data. Finally, a second-order confirmatory factor analysis model and a causal relationship path analysis model were built by the method of SEM, and the relationships between the five factors were analyzed .The results show that human unsafe behaviors have the greatest impact on coal mine work safety, followed by the unsafe factors in organizational management and unsafe status of articles, coal mine inherent risk and the unsafe factor in the environment. In addition, there is a direct or indirect impact between the 5 factors.

Key words: work safety, influencing factors, structural equation model (SEM), path analysis, confirmatory factor