With the adoption of the Digital Landslide Technique and high resolution remote sensing data, remote

sensing has enabled more accurate qualitative and quantitative survey of regional landslides and monitoring of

large landslide since the beginning of 21 Century. Digital Landslide Technique is based on geoscience principles

of landslide and depends on the support of remote sensing, digital photogrammetry and image-processing, GIS and

computer techniques. It can be divided into four parts, namely, landslide identification, capturing of basic

landslide information, information storage and management, and spatial analysis. The technique has perfected and

developed itself continually during the practice since the end of the 20th Century.