Abstract: Through on-site field investigation, a detailed study of the site environment and geological conditions are carried out at the landslide at the vegetable oil factory in Fuling District of Chongqing. According to the landslide feature and influential factors, three conclusions are reached as follow: the building of the State Road No. 319 above the landslide area caused the increased water flow and incomplete backfilling of the drainage channel. These two human activities are the crucial factors causing the landslide; the long-term rainfall is the controlling factor. FEM and limit equilibrium method were used to evaluate the stability of the slide. According to assessment results and influential factors, this paper discussed the treatment methods of the landslide.