Abstract: Through the parameters such as device form and voltage were tested by distributed high-density resistivity method in the known goaf of a mine in Ordos, the electrical response characteristics of the profile curve, typical profile and stereo slice were analyzed. The optimized test parameters and identification features of goafs were analyzed systematically. The results showed that through the distributed high-density resistivity method was used to optimize the test, the corresponding curves, two-dimensional sections and three-dimensional slices were analyzed to form a feasible and effective detection.