Abstract: Existing accident-causing mechanisms in production system generally involve people,machinery,environment,management of four factors.However,four factors influencing on the accident have dissimilar representation in different accident-causing mechanism.For coal mine,the particular and complex production system,the paper studies the influence mechanism that four factors affecting their safety.The man-machine ring is composed of coal mine production systems necessary factors,and management is the control factors of production system.Based on this idea,the paper set up the accident-causing model of production system,and logic operation is adopted to simulate the model.The simulation has showed that the model can better reveal the accident occurrence mechanism in complex production system.According to this model,control measures to the complex production system were put forward.