Abstract: The effective detection of the distribution range and development trend of spontaneous combustion high temperature area of coal gangue yard is the key and difficult point to control spontaneous combustion area.In this paper, a comprehensive detection method is used to identify the high temperature zone of spontaneous combustion. First, the direct temperature measurement method inside the covering medium is used to determine the plane distribution range of the temperature field, then the extended range and depth of the spontaneous combustion zone is detected by high-density electrical method, and finally the accuracy of the location and range of the spontaneous combustion zone is verified by drilling temperature measurement method.The results show that the comprehensive detection method is feasible to determine the plane and depth extension of the high temperature area of spontaneous combustion in coal gangue yard, and can provide a new idea for the detection of high temperature area of coal gangue yard.