Abstract: We introduce the working principle of multipoint mobile air flow measurement device, and the key technologies of multipoint movement, accurate positioning and calculation of average wind speed. The power of the device is electromotor, and the transmission system of the device is lead screw which controls the movement of wind speed sensor on level and vertical direction; the point and time of measuring wind is controlled by programming. The workload of manual work is reduced, and the veracity is improved. The application is tested in Wangpo Coal Mine, and it shows that the average precision rate of the device is 96.31% compared with artificial measuring wind.