Abstract: New mine is lack of gas data,especially the gas content and gas pressure data.Based on the coal samples which were obtained during the exploration of the new mine exploration drillings,the coal seam gas content determined by using exploration drilling coal core desorption.According to the gas content calculation of Langmiur equations,gas pressure in the original coal seam is deduced.According to the calculated coal seam gas pressure and the surrounding mine production data,is K₂ seam of Baoda coal mine about coal and gas outburst risk is evaluated.