Abstract: According to the high temperature phenomenon occurred in mining and excavation working faces in mine,in combination with mining and excavation method of mine and coal mining technical process,the paper analyzed the causes of thermal disaster occurred in mine and provided the new mobile local cooling technology in min e. The paper introduced working principle of TS- 300 B mode mobile local refrigeration and cooling system. With cooling air of mine roadway,the refrigeration,compression, cooling and other measures were applied to pass heat to cooling water. And the ventilator was applied to blow cooling air to working face and to make continuous circulatio n of cool and heat exchange. Thus the high temperature of mining and excavation working face could be reduced. The application practice in Zhengzhou Liliangdian Mine s howed that according to parameter comparison of detection site before and after temperature cooling,the cooling effect of mine mobile local cooling technology was obviou s,the temperature of mining and excavation working face could be reduced to about 26。C and the relative humidity also could be reduced by 10% ~ 20% relevantly. The tec hnology would be favorable to eliminate mine thermal disaster and could meet the requirements of safety production in mine.