Used the MarkovTRAIN model, a mining enterprises pneumoconiosis incidence trends is prediced. The result shows that the unit pneumoconiosis development quickly, must strengthen the dust prevention and control. Using LEC method to mine in the workplaces where harm worker healthy environments were evaluated and harm through improved LEC method for scientific management, and put forward effective countermeasures to control, for the prevention of occupational health hazards in mines and puts forward scientific basis for control.