Abstract: The Prevention of accidents must control unsafe behavior of human. Based on the analysis of miners′ unsafe behavior intervention strategy set, using the principle of system dynamics (SD), this article constructed the SD model of miners′ unsafe behavior combined intervention system, then used the software "Vensim simulation" to carried out a dynamic simulation on the intervention effectiveness of the combined intervention system. In this study, the miners′ unsafe behavior combined intervention model developed from qualitative to quantitative mathematical model, it will have a certain guiding significance for coal mine to put forward scientific employees′ unsafe behavior control strategies.