Abstract: In order to solve a high efficient uillization of mine different concentration gas, from the low concentration gas features, the paper systematically analyze d the technical key of the mine gas utilization and had a study on the distribution type energy system technique based on the ladder type utilization of the different conc entration gas. A new model of the mine gas double effect ladder type utilization type utilization was established based on the gas concentration and energy grade as the factor. A low concentration gas-fired power generation cluster and ten sets 60 000 m3/h ventilation gas oxidation power generation system with a total installed capacity of 13 000 kW was set up in Dafosi Mine of Binchang Mining Area and the energy utilization efficiency was about 70%. From the year of 2009 up to now, an accumulated power generation was 2.0 x 108kWh and a total emission reduction of the carbon dioxide was 6. 3 x 105t. The good social and environment protection economic benefi ts were obtained.