Relatively large exploration depth and good resolution at depth are usually required in oilgas and mineral resources exploration. The boreholesurface electrical resistivity tomography technique can satisfy the demand. A typical synthetic geological model was designed in this paper, which is based on the simulation of the finite element method by using Ansys FEM software. The response apparent resistivity of the model acts as the input of the inversion. According to the results obtained by the smoothconstrained least square inversion method, this paper describes characteristics and distribution of the anomalies. The results and the recognition obtained obviously have some practical values.