H-CN; mso-bidi-language: AR-SA">///The paper summarized the geological disasters in hemas-microsoft-com:office:smarttags" />Huaihe River drainage area, Jiangsu Province in the last 50 years. Based on geological disaster investigation, landslide, collapse, land subsidence, karst collapse and collapse by mined cavity in the area were analyzed from several aspects, such as lithology, topography and geomorphology, geological structure, rainfall and human activity etc. Human activity is the main cause of the geological disasters. The present development is not only effected by human activity, but also by other causes such as soft layer, geological structure and rainfall etc. The paper proposed a main countermeasure as putting prevention first, evaluating disaster scientifically and enforcing supervision and propaganda.