[Objective] The objective of this study is to reveal the soil erosion characteristics of dumping sites in Three Gorges reservoir region in order to provide basis for the management in this area.[Methods] Runoff plots were constructed and simulated artificial rainfall was used in this research.[Results] A significant linear relationship was found between rainfall and erosion amount. The rainfall intensity showed a significant power function correlation with the runoff time, while it showed an exponential regression correlation with the sand content. Fine gravel with high concentration in the dumping sites surface soil reduced the splash and sheet erosions in some extent, however, it intensified the gully erosion under the condition of heavy or continuous rainfall. Furthermore, soil erosion in the dumping sites presented seasonal variations. During the dry season, soil erosion was dominated by sheet erosion and slight gully erosion, and the erosion amount was little. In contrast, in wet season, shallow grooves were converted into ditches rapidly, and the erosion became more severe.[Conclusion] As soil erosion in dumping sites of Three Gorges reservoir region changes seasonally, constructions can be done according to the changes of season to avoid the rainy season. Taking the protective measures to prevent or slow down the development of gully erosion in the rainy season is the focus of soil and water conservation in the study area.