The landslide occurred in the Arab village, located in North Khorasan province, which has been studied by a landslide mechanism. The lower part of the village was slipped due to high slope of the village and spring floods. In this study, electrical resistivity tomography was used to investigate the geometry of the landslide and also to detect the discontinuity between the landslide and the dense bedrock. This method was performed on two profiles perpendicular to the landslide axis and perpendicular to the axis of the village. Two geotechnical boreholes were also drilled to fit the data. The results show that the main reason for landslides in the clay and marl layers, which is completely saturated by rainfall and sewage infiltration, has affected a large part of the village. In this zone, there are many active fractures and paths that drain the entire stream of water from the upstream and transport it under roads and homes. This in turn increases the pore water pressure. The presence of marl layers exacerbates this