Abstract: Abstract：Remote sensing technology for geological hazards survey and research providing new ways and means of investigation and study of geological hazards has become an important technical means, and high-resolution Quickbird satellite images in geological hazards research have an especially wide application. In this paper, the authors studied the Xiaobao rock avalanches in Hanyuan County and used Quickbird satellite images and remote sensing digital image processing to obtain high-precision remote sensing image as the data source for the study of geological hazards and remote sensing interpretation. Image features of the Xiaobao rock avalanches were summed up. According to remote sensing image features, the size, stability, harmful extent and development trend of the Xiaobao rock avalanches were judged, and its formation conditions and affecting factors were analyzed.