Abstract: The thermal properties of coal play a crucial role in the spontaneous combustion of coal.Thermophysical parameters are intrinsic factors that determine heat transfer capacity.Coal samples from Aiweier and Liuhuanggou mining area in Xinjiang Province were selected as research objects.The thermal diffusivity, specific heat, and thermal conductivity of coal within the range of 30 to 300℃ were measured by LFA457 Laser-flash apparatus.The experimental results indicate that below 240℃, with the increase of temperature, the thermal diffusivity decreases, the specific heat increases, and the change of thermal diffusivity and specific heat under nitrogen and air conditions is similar.Above 240℃, the difference in thermal diffusivity and specific heat under nitrogen and air conditions gradually increases with increasing temperature.Under air conditions, the thermal diffusivity begins to increase, and the growth of specific heat gradually slows down.The thermal diffusivity and specific heat under nitrogen are consistent with the trend above 240℃.The change rate of thermal diffusivity and specific heat shows obvious stage characteristics.Before T₁ and T₂, the difference in change rate of thermal diffusivity and specific heat under air and nitrogen conditions is small.After T₁ and T₂, as the temperature increases, the difference gradually increases, indicating that the internal molecular structure of the coal sample changes greatly under air conditions.The thermal conductivity increases with the increase of temperature, which is consistent with the change of specific heat, so the specific heat is the key factor affecting the thermal conductivity.By calculating the uncertainty of the thermal property parameters, the uncertainty of specific heat is the largest, indicating that the results are highly dispersive.The research results will help to further understand the internal heat transfer mechanism of coal low temperature oxidation and heat storage process, and provide a theoretical basis for preventing coal spontaneous combustion.