Abstract: Through the current situation analysis of the thermal damage in Zhuji Coal Mine, the source of heat damage of Zhuji Coal Mine during deep mining process is studied, and the heat-electricity-cold mixed combination technology and the series refrigerating scheme of lithium bromide refrigerator and centrifugal refrigerator used in Zhuji Coal Mine is analyzed. The cooling effect of heat damage after treatment technology is researched. The results show that the heat source of Zhuji Coal Mine is mainly heat release of surrounding rock, which accounts for 42% of total heat quantity. And the cooling effect of roadway, working face is more obvious, the heat preservation effect of fan drum is relatively, which improves the underground working environment, obtains the desired effect and propose some effective suggestions to solve the problem.