Abstract: With entropy based complexity measurement under the theory of complex system,this paper oriented to evaluate the ecological environment of coal circular economy system.The concept of environmental entropy is presented and under which the degrees of disorder or pollution to environment is quantitative in respective nodes of circular chain.Consequently,an environmental evaluation model is set up,which is based on complexity metric of entropy,and empirical research on two cases,which are Gujiao Mine Circular Economy Park of Xishan Coal Electricity Group, indicates that the proposed model is available to environment evaluation of coal circulation industries.The highlights are preferred to conclude as a new environmental entropy metric method and an application case in this paper.