Abstract: In order to forecast gas enrichment area and effectively reduce safety problems induced by uneven gas distribution in coal mines, the paper, based on the gas geological theory, proposed the gas occurrence index and gas enrichment area identification methods according to structural features, decided the region that were composed of the points where gas occurrence index was more than 20 for gas enrichment area. This paper, taking Jixian coal mine as example and combining with gas geological characteristics in the mine, selected the center position of structural features as starting point, the length from the base as independent variable, gas occurrence index as the dependent variable for establishing mathematical model, identified the gas enrichment area in western No.2 mining district. The results show that the region constituted by the points away from magmatic rock wall less than 65 m or away from synclinal axis less than 220 m is gas enrichment area.