Abstract: High-density resistivity survey is an array type of exploration method, characterized by large amount of observation data, rich geological information and high work efficiency. Because the data are mostly collected from sections, with results from two-dimensional inversion, it is common for local abnormal values or inconsistency of adjacent line control in data processing. In order to solve such problems, this paper puts forward in the irregular "#" section layout exploration method to supplement data in crossing direction. With 3-D visualization software, a geological model is set up on the basis of high-density resistivity survey parameters to realize the 3-D visualization of high-density resistivity method in the application of subduction exploration.