Abstract: The increase of seismic stations around the world and the progress in data processing, modeling, and interpretation provide favorable conditions for studying the dynamic changes of underground media in landslides, making the study of landslide characteristics using landslide seismic signals gradually become one of the important ways in landslide monitoring. This article mainly introduces the technology and practical application of passive source seismology for landslide signal recognition, analysis, and process monitoring. Many case studies show that seismic signals generated by landslides can be used to monitor the landslide process economically and effectively and even can identify the precursor signals of landslide disasters under appropriate conditions, providing technical support for landslide disaster warnings. If Combined with other geophysical or remote sensing methods, the establishment of a multi-parameter geophysical monitoring system will significantly reduce the casualties and economic losses caused by landslide disasters in the future.