Abstract: As one of the countries with the most frequent and serious geological disasters in the world, it is urgent for China to monitor and prevent geohazards via more advanced, more economical and effective means. The paper summarizes the application status of multi-source remote sensing data such as microwave remote sensing, optical remote sensing and LiDAR in the field of geohazard at home and abroad, including earthquake, landslide, ground subsidence, land collapse, volcanic activity, frozen earth change, glacial activity, soil erosion and coastal erosion, and puts forward some related suggestions as well.