Abstract: Geological advanced prediction in excavation process of coal mine tunnel and working face related to safety,quality and production schedule of coal mining project.The tunnel DC resistivity method is one of the most important geophysical advanced exploration in coalfield-hydrogeological exploration.In this paper discusses the principle,operating procedure and electrode arrangement method of direct current advanced exploration were discussed in this paper,and applied this method in the tunnel advanced exploration in one coal mine.The practical application results showed that the tunnel DC resistivity method can accurately reflect the spatial distribution feature of the low-resistance geological bodies in front of the tunnel,which provided the basis for mine water damage prevention.