Abstract: In order to investigate the effect and the timeliness of the organization intervention of miners’ unsafe behavior, the organizational intervention system which covers the entire coal mine system was constructed combining with the actual coal mine. The system dynamics model of organization intervention of miners’ unsafe behavior was constructed based on the analysis of miners unsafe behavior organization intervention method set and the principle of system dynamic. Dynamic simulation with different length and different intervention coefficients was carried out by using Vensim simulation software. At the same time, the objective of the conclusion was verified by comparing the simulation results with the actual data. The result shows that the effect of organizational intervention is obvious in the short term, however, it can not make the level of unsafe behavior continue to reduce in a longer period of time. The effectiveness of organizational intervention will be significantly improved through continuous optimizing intervention measures and improving the intensity of intervention.