Abstract: The deforming of landslides usually expressed in horizontal and vertical direction separately.Based on the X,Y,Z coordinates from a real monitoring project.A method is proposed to build 3D model of landslides by constructing triangulated irregular network(TIN) and extruding contour lines.The tiny movement of monitoring points becomes visible by zooming movement vectors,and the whole landslide deforming was replayed using rubber-band animation techniques.