The positioning accuracy of seismic sources is one of the most fundamental and important issues in microseismic monitoring technology. There are many factors that affect the accuracy of microseismic source positioning, the most important is the accuracy of the velocity model. While the calibration gun can calculate the wave speed near the coal seam, it cannot give a reasonable wave speed in space. The use of logging data can fully understand the velocity and density of individual rock formations, which can help better grasp the geological profile of the monitoring area and improve the accuracy of locating microseismic sources.