Abstract: In order to explore the methods and ideas of improving the performance of green mining, this paper constructs a green mining efficiency evaluation index system based on the enterprise level, and conducts an empirical analysis of its efficiency based on the combined DEA model of mining and environmental governance, and analyzes the current situation of state-owned coal enterprises according to its efficiency value and synergy. The results show that the overall level of mining efficiency in the first stage is relatively high and the overall efficiency level is relatively stable, while the comprehensive utilization efficiency level of associated resources in the second stage fluctuates greatly, and the efficiency coordination level in the two stages of green mining still has great room to improve. Therefore, to promote the two-stage coordinated development level is helpful to improve the green mining efficiency of coal enterprises.