Abstract: On the basis of summarizing the research on thermal control of mine at home and abroad, we propose a convenient and feasible method of liquid-gas phase transition cooling technology in view of the characteristics of small range of heading face, fewer workers, less cold requirement, and the serious heat damage in deep coal mine heading face. Numerical simulation software ANSYS FLUENT is used to carry out numerical simulation of using liquid gas phase transition to control the temperature of the tunneling surface. The results showed that: the temperature of the heading face （Ｔ） decreased with the increase of the injection time （ｔ）, and they were in negative logarithm of T=-aln （t） +b; as the diameter of the spray droplet decreased, the temperature （Ｔ） had a logarithmic relationship with diameter （ｄ） of T=aln（ｄ）+b; the temperature （Ｔ） presented linearly decrease of T=-aQ+b with the increase of jet flow （Ｑ）.