When the resistivity of the parameters is used in geothermal field exploration, the temperature sectional drawing made by the conversion of resistivity parameters to temperature paremeters is a more intuitive graph to show the distribution of underground temperature. When known geothermal drilling is available in the exploration profile, it is possible to use the known temperature drilling to forecast field distribution of the underground temperature, and this is advantageous to determining the distribution of thermal energy storage structure and the position of the drill hole. In temperature calculation, the calculation of initial formation resistivity is related to the surveying method. The choice of the correct calculation of initial resistivity is very important for temperature calculation results. This paper deals with the calculation method for temperature based on resistivity and initial resistivity value of strata, which is important in explaining the geothermal field exploration.