Abstract: For the majority of sedimentary rocks are bedding structure of electricity from its point of view, they are different types of resistivity of the composition of the strata, so that the resistivity of the formation and adoption of one of the direction of current, showing a anisotropic. Made use of two-dimensional layered media background resistivity inversion perturbation method, based on observations of the background cross-section of apparent resistivity profiles, to determine the context of electricity market structure, the use of resistivity perturbation method to calculate sensitivity matrix, through experiments get good results.