Starting with the principles of IP logging and field methods, the authors analyzed the effects of polarization logging curve in electrode spacing, formation resistivity and residual polarization potential in combination with the measured curve. Some conclusions have been reached: the short distance of the electrode system should be selected in logging detailed stratification, the long distance of the electrode system ought to be selected for understanding electrical of rock and mineral layer, or the background value pole pitch electrode system should be chosen; the formation resistivity affects the visual polarizability logging curve of layering. In addition, in order to avoid the impact of residual polarization potential, we should decentralize the bottom of the gradient electrode system in logging and enhance the top of the gradient electrode system in logging.