Abstract: In order to solve the high temperature problem in mechanical and electrical chamber and other special workplaces in Zhaolou Coal Mine, we used the method of field observation to master heat damage situation of local high temperature region; based on the study of refrigeration principle, feasibility, reliability of vortex tube, we proposed a new targeted method of local heat damage control, that is combined vortex tube refrigeration technology with micro-climate enclosure structure. The results showed that the dry bulb temperature within the micro-climate enclosure structure decreased 9.4 ℃after taking cooling measures by vortex tube, and the wet bulb temperature decreased 10.3 ℃, the working environment of miners was significantly improved, and a good cooling effect was obtained.