Abstract: According to the unbalanced ventilation supply in the mining block and heavy loading of the ventilator and others problems in Yunhe Mine, the ventilation resistance measurement was conducted on the mine ventilation system.Based on the comprehensive analysis on the problems existed in the mine ventilation system, a balanced ventilation principle method was provided to optimize the mine ventilation system.A computer was applied to the simulation resolution on the ventilation netwo rk system from 2012 to 2015 and to analyze the mine ventilation status when different mining and excavation layout made. With the optimization and control of the balan ced ventilation in the mining block, the minimized target of the mine ventilation resistance increasing was reached, it could meet the mine ventilation requirements and C ould ensure the mine production capacity.