Abstract: In order to know the influence of geological factors on outburst coal mining, the gas geological control theory was used to analyze coal seam gas occurrence law for No. 3 coal seam. Mine structure and coal seam buried depth are the main influencing factors of coal seam gas content and stress of coal seam mining. The absolute gas emission, gas concentration, the drill cuttings S and the amount of gas desorption △h₂ were determined in 3510 and 3301 working faces. The 3510 working face is tectonic control area and 3301 working face is buried depth control area. The results show that the anticline structure of Hanshan is beneficial to gas sealing and stress superposition, which is the key to prevent coal and gas outburst. The measuring parameters in structural area are much higher than that in atectonic area. With the increase of buried depth of coal seam, coal seam gas content and coal seam stress increase significantly.