Abstract: In this paper, it obtained roadway average air volume by using the determination method of roadway center maximum wind speed. First, it deduced the correlation of maximum wind speed and roadway average wind volume, then gave determination, calculation method and applicable scope of wind speed distribution coefficient. This method could improve the speed and accuracy of wind measurement, reduced measurement error, the wind speed obtained from wind speed sensor was also directly converted into air volume, which realized the monitoring and control of mine air volume.