Abstract: With the increasing manufacture capacity and the growing ventilation circuit,the ventilation resistance of Wangyang coal mine has increased,and the effective wind of recovery face was difficult to meet the needs.Sometimes the face of maneuvering air and the corner gas is overrun.After the coal mine implementing optimization to the original ventilation system,the ventilation resistance declines 59%,the degree of difficulty and simplicity in the ventilation becomes easier,the ventilation electricity saves 76 million every year,it satisfies the safety needs well,and achieves the energy saving of ventilation to the coal mine.