Abstract: Geothermal anomaly is an important factor which influences coal mine development and safety production. Borehole temperature measurement is the common and main method to obtain geothermal data. Due to the large quantity of measuring drilling engineering, it is difficult to achieve adequate coverage density. Taking geothermal study of Dingji mine as an example, simulation of geothermal anomaly by using ANSYS software is discussed. The method takes fully into account the regional stratum thermo-physical properties such as thermal conductivity and geological structure. The simulation results are in agreement with the data from the on-the-spot survey by comparing the actual drilling data. ANSYS simulation of geotherm can be used for outlining the scope of coal mine geothermal anomaly area, formulating measures of mine heat-harm control and improving capacity of mine production.