根据全井眼地层电阻率成像测井仪（ＦＭＩ）的工作原理及技术指标，设计了一套岩芯电阻率成像系统，针对该系统用三维有限元法编制了数值仿真程序，并运用该程序对具有不同几何形状、尺寸、分布和电阻率对比度的电阻率模型进行仿真成像，给出仿真结果及有关岩芯电阻率成像的几点结论，为成像测井资料的定量解释提供参考． According to the working principle and technical indexes of FMI, a set of core resistivity imaging system is designed. For the system, a numerical simulation program is developed by using the three-dimensional finite element method. With this program The resistivity model with different geometric shapes, sizes, distributions and resistivity contrasts is simulated and the simulation results and some conclusions about the core resistivity imaging are given. It provides a reference for the quantitative interpretation of imaging well logging data.