Abstract: In order to evaluate the mine thermal environment scientifically, evaluation indexes are established by systematically considering the internal heat source, the surrounding environment and the structural factors of the mine, a new evaluation index system of mine thermal damage is established.MATLAB software is used to model the evaluation index system.After the evaluation of the actual production situation before and after the transformation of thermal damage in Zhangshuanglou coal mine, it is verified that the thermal environment system can reflect the actual production situation in the mine accurately.The system is simple, operable to evaluate the mine thermal environment, and predict the situation after the mine thermal damage reconstruction.