Abstract: Monitoring the spontaneous combustion coal gangue piles surface temperature is the basement to look for the fire position and put forward the pertinence treatment measure for the fire. The research proposes a method that the infrared imaging apparatus with the total station is used in getting the spontaneous coal gangue piles temperature filed data, and processes the data by triangular interpolation principle, completing the construction of temperature field and verifying the accuracy to prove the feasibility of the method. It uses griddata function in Matlab software to preprocess temperature and elevation data. It draws the isotherm by contour function and analyzes the trend of the temperature. It displays the temperature filed in four dimension.