Abstract: According to the gas geological conditions of No.2 seam in Taoer Mine, the quantification theory was applied to screen the factors affected to the gas C ontent distribution of No.2 seam in TaoDer Mine.The factors were the geological structures, roof lithology, magmatic rock intrusion and buried depth. The linear regressio n model was applied to predict the gas along strike and tendency distribution law of each unit.No.2 seam was divided into three gas geological units. I unit was gas we athered zone, I unit was outburst dangerous zone and unit was outburst dangerous zone in potential.