Abstract: In order to accurately master ground temperature distribution in deep mine, we measured the original rock temperature of -505 to -1 030 levels in a deep mine, and measured the thermal physical parameters of surrounding rock by steady-state double plate method, determined the thickness of surrounding heat dissipation circle at the point. The measured results show that the shallow geothermal gradient is 1.557 5 ℃/hm, the deep 3202 working face is 2.114 3 ℃/hm, geothermal gradient has a regular change with the increase of mining depth; the SPSS analysis shows that there is a high correlation between geothermal gradient, original rock temperature and elevation. Regression prediction analysis shows that original rock temperature can get 39.455 ℃ and geothermal gradient also reach 3.453 3 ℃/hm at -1 600 mlevels, the heat damage in deep mine will be serious.