Abstract: There are the rich coal resources in late Paleozoic in eastern Henan region.It mainly developed Ⅱ₂ minable seam and Ⅲ₂ local minable seam in the lower Permian Shanxi formation.The Ⅱ₂ minable seam of anthracite and lean coal,buried in 585~1985m and 2.33m in average thickness,it has the features of regional stability thickness distribution,lower grey,lowest sulfur,phosphorus,and highest calorific value.Gas content in coal seam increased with the more seam buried depth,the nitrogen-methane belt located above 1300m,methane under 1300m.By the influence of tectono-magmatic activities-coal buried depth,gas content is generally lower due to magmatic activity frequently and the escape of gas in the central northern coking coal mixed zone,but gas content is higher due to magmatic activity relatively weak,control by normal faults and buried deeply coal seam in southeast area.