Abstract: In the mining of closed distance seam group,the upper coal seam mining is influenced by coal seam interval,mining height of lower coal seam and other factors under the condition of emptying lower coal seam.Through studying the internal relation between the technical characterstics of ascending mining and its influencing factors,this paper established the feasibility evaluation model of ascending mining based on AHP theory,calculated and analyzed the index weight values of all levels,and consistency check is done.According to the characteristics of ascending mining mode,its feasibility assessment levels are divided.Taking the ascending mining in No.45 mining areas of Hengyuan coal mine as engineering example,this paper analyzed and calculated the feasibility evaluation gross value,and then determined the feasibility of ascending mining under these conditions.