Most of extremely complex terrain are not accessible by road, and the road construction project is difficult and costly, so the survey means of ground drilling alone cannot ensure the completion of the survey task. Based on this situation, a comprehensive resource exploration method of surface physical exploration, drilling + underground road exploration was proposed based on the coal resource exploration work of Fuping Mine. In the area with drilling conditions, surface survey and GPS positioning were used to determine the location of drilling construction, and modern technology such as drones, cables and gantries were used to transport drilling equipment and diesel generators to the designated location; in the area without drilling conditions, underground road exploration was adopted to carry out exploration work. The results showed that the resource endowment was identified and the resource exploration task was completed.