According to the IPCC report, human-induced atmospheric carbon emissions have contributed to the global temperature rise, and methane emissions are also one of the important causes of the atmospheric greenhouse effect, in addition to the most important CO2 emissions. This study focuses on the methane emission during traditional energy coal mining, combined with the measured gas coal seam content, by measuring the gas carbon emission from the 1930 mine of Aiweiergou Gully Coal Mine, it is calculated that under the condition of 100% methane utilization, the methane carbon emission is reduced from 31519.3t to 3467.1t, which is a decrease of about 89%. Combined with the characteristics of gas in mine 1930 of Aiweiergou coal mine, methane power generation is used to convert energy into stable electricity as well as heat energy to achieve economic benefits, while methane extraction subsidies are also part of the important economic benefits. In addition, by constructing a coal mine methane economic gain model based on the background of carbon emission rights, this paper measures the comprehensive coal mine methane gain under 100% utilization as 2610420.67 yuan. In summary, the low-carbon effect of gas utilization in the Aiweiergou coal mine and the prospect of economic gain are huge, and can be used as a way to achieve emission reduction and additional income generation for mine production.