Abstract: In order to strengthen the monitoring and evaluation of potential landslides in the reservoir area of Dahuaqiao Hydropower Station, 46 Sentinel-1 images acquired from January 2018 to July 2019 and SBAS InSAR technology are used to produce InSAR time series deformation results. The results show that the annual deformation rates of Dahua and Lagu Landslides along the river are up to -100 mm/a and -110 mm/a respectively, and the cumulative deformation variables are -14 cm and -12 cm respectively, which are in an unstable state. During the flood season from May to October, the deformation rate increases sharply and it is obviously affected by rainfall. The field investigation shows that there are obvious landslide signs in Dahua and Lagu Landslides, which indicates that the InSAR results are highly reliable. The results can provide a scientific basis for the landslide treatment in Dahuaqiao Hydropower Station reservoir area.