Abstract:The Three Gorges Reservoir area is located at the upper reaches of the Yangtze River,where the geological hazards occur with high frequency,especially the major landslides are fully developed at the bank slopes along the river. These landslides are characterized by great amount,extensive distribution and big magnitude,often causing serious loss and casualty in local areas. How to predict landslides is the key to prevent hazards and reduce economical loss and casualties. The rainfall is the dominant exterior factor triggering the landslides. Based on statistic analysis of the data of 112 landslides(volume≥104 m3),the relationship between landslide and rainfall is derived. It is suggested that the temporal prediction criterion of landslides in the local area be established by the maximum 24-hour rainfall. In terms of the characteristics of landform,lithology,geological structures etc.,the Three Gorges Reservoir area is divided into two parts for landslides prediction. Using the maximum 24-hour rainfall in 72 hours as the prediction index,the occurrence probabilities of landslides are determined in different rainfall conditions for the two subareas. The distinct difference of landslides probabilities between the two subareas indicates that their different mechanism of rainfall induced landslides. Based on the coupling analysis of the geology and meteorology,it is possible to improve the precision of the landslide forecast.