Abstract: Combining with fire characteristics of Anjialing Open-pit Mine, high-density electrical method for fire detection being suitable to this mine is proposed. The scope of fire zone is delineated and its map is plotted through this method. The feasibility of this method is verified by borehole temperature measurement method, and the results can be applied directly. It provides significant reference indicators for budgeting and fire extinguishing of Anjialing Open-pit Mine.