Abstract: The experience of field measurement of symmetrical quadrupole electrical sounding method is summarized, and the conventional polar distance arrangement device is designed. Qualitative interpretation are carried out for the measured electric sounding curve of the site, the shape, the asymptote, and the extremum of the electric sounding curve shall be determined through qualitative analysis, and the parameters of the geoelectric section of the measuring point shall be determined through quantitative interpretation. Obtain the resistivity value of each electrical layer in the field with the probability statistical method. Combined with a project of soil resistivity measurement in the shallow stratum of a proposed substation site, it is proved that the measurement results of symmetrical quadrupole electrical sounding can better meet the design requirements. It is suggested that the variation of the resistivity of the shallow soil should be considered in the design. The data provided during the actual measurement only represents the value under the current temperature state.