The electrical resistivity testing technology is presented to research the structural characteristics of cemented soil quantitatively. To describe the change of the resistance
three electrical resistivity indices: average structure factor F
average shape factor f and anisotropy factor A; are introduced. With the measure of vertical and horizontal resistance during the compression test
the electrical resistivity indices of cemented soil are concluded. Then
the relationship between the electrical resistivity indices and physico-mechanical characters is analyzed. The results show that it is effective to research the soil structure by the electrical resistivity indices.