Targeted at a slope in Nanhuan Road, Fuxin, Northeast China, this paper explores the cause and  failure mechanism of landslide through site survey, surface displacement monitoring, inclinometer measurement, and limit equilibrium analysis. It is concluded that  the landslide is mainly attributable to the load increase on slope crest induced by subgrade backfill and the rise in groundwater table resulted from rainfall infiltration. The  results of the monitoring and limit equilibrium analysis show that 2 slip  surfaces were placed at reasonable positions in  the slope. Through the  analysis of monitoring results, the mechanism of the landslide is summarized as gradingcreeping-sliding mechanism. Finally, the sliding mass was portioned to lay the basis for further slope management.