Abstract：In this paper, we take Qianjiangping landslide in 2003 as an example to study landslide movement characteristics based on seismic inversion technology. We first collect seismic waves inspired by the landslide through the China earthquake networks(CEN), then invert for the force-time function of the landslide source, divide landslide sub-events using time-frequency analysis, and finally obtain the dynamics of the sliding body and restore the landslide process. The sliding bed slope, landslide direction, and sliding body displacement derived from seismic inversion coheres with the results from the field survey. We also distinguish a reverse motion from the sub-events analysis. This study helps understand the sliding mechanism of large-scale high speed landslides and is helpful for remote monitoring of landslide disasters.