[Objective] The impact of the Three Gorgesreservoir water level and rainfall on Bazimen landslide is analyzed to evaluate its stability.[Methods] Landslide monitoring data were used for qualitative analysis of Bazimen landslide deformation. Based on the quantitative analysis of water level and rainfall in the reservoir area, 20 different kinds of working conditions were then determined, and the stability of Bazimen landslide was calculated through Geo-Studio.[Results] The accumulated displacement monitoring curves from 10 GPS monitoring points in the Bazimen landslide were all ladder-shaped and increased with time, and they showed a synchronous morphologic change. Under the 20 different kinds of working conditions, the stability coefficient of the Bazimen landslide was more than 1. When the rain fall condition changed, the minimum stability coefficient varied mildly under the constant reservoir water level. When the reservoir water level changed, the minimum stability coefficient varied greatly under the constant rainfall. The minimum stability coefficient was successively reduced under five different conditions including stable reservoir water level at 175 m and 145 m, reservoir water level fluctuation in 2014, average reservoir level, and reservoir water level fluctuation in 2013.[Conclusion] The Bazimen landslide is in a stable state, its stability is affected by rainfall and reservoir water level, and reservoir water level is the main factor. The stability of Bazimen landslide will be worse with the larger water level change in the reservoir area.