Abstract: Landslide is one of the common geological disasters, how to accurately detect the depth of sliding surface, to determine scale landslides and geological disaster evaluation is very important. Hill landslide survey, for example, this paper takes the hills, through inversion, the high-density electrical method two-dimensional profile can clearly reflect the depth of the landslide’s horizon and its corresponding to effectively determine the depth and thickness of the sliding zone, to determine the embedded depth of bedrock surface; The location and depth of drilling. Through three dimensional inversion, the high density resistivity method can analyze the different(two-dimensional) slice, effective understanding of the basic characteristics of the whole landslide; Based on the low resistance of abnormal body stereo display, more three-dimensional characteristics of the macroscopic representation of landslide, the landslide scale can be predicted.