For a long time, the development and utilization of coal resources has made important contribution to the development of China's national economy. However, at the same time, it has damaged environment in the mining area seriously. Therefore, developing circular economy in the mining area promotes the regional sustainable development. In this paper, according to entropy flow generated in the process of exploiting coal resources, the authors advise to introduce the related industries which consume the entropy flow and realize entropy reduction in the mining area. By reviewing and analyzing the development of circular economy in Pingdingshan Coal Mining Group as an example, the authors conclude that development of circular economy and the introduction of negative entropy flow could promote the balance of the ecosystem and increase order in the mining area.