Baishuihe landslide is located 56 km west of China Three Gorges Dam and it is one of the key landslides being monitored in the Three Gorges Reservoir Area. It has been closely monitored and included in the second phase of the "Professional Landslide Monitoring System"in September 2003. During the 2007 flooding season,blue and orange alerts signals were issued indicating that alert and emergency situation were developing on this landslide. A large number of monitoring data has been collected,such as surface displacement measurement using GPS,ground water measurements,drilling logging data,rainfall record and reservoir water level fluctuations. According to these observations,the landslide has been in continuous deformation since at least 2003. Rainfall and water level fluctuations,which causing changes in groundwater, are the major factors controlling the deformation and stability of Baishuihe landslide. Under the extreme conditions of simultaneously heavy rainfall and lowering reservoir water level,landslide movement is expected to accelerate. Using the software Geo-Studio,this paper summarizes the seepage analysis which calculates the transit pore pressure condition in the soil due to rainfall infiltration. The relationship between the movement and rainfall has been explored by applying the transit pore pressure condition into the movement analysis in SIGMA/W. This provides great insights into the landslide stability analysis under extreme climatic conditions.