Studying the mechanism of landslides and preventing disasters using small baseline subset InSAR (SBAS- InSAR) technology are important to monitor the time- series deformation of landslide- prone areas. In this paper, the time- series deformation characteristics of the Moli landslide in Goye Town, Zhouqu County, Gannan City, Gansu Province, were analyzed using the SBAS- InSAR technique. The deformation distribution map and temporal deformation characteristics of the Moli landslide area were obtained from the optical remote sensing image data from 2018 to 2021. Combined with other exploration results, the accuracy of the deformation monitoring results was verified, thereby confirming the reliability of the SBAS- InSAR technology for monitoring the deformation of superlarge landslides. Results show that the plane of the Moli landslide exhibits the shape of a “long tongue,” with a maximum length of 1 500 m in the sliding direction, and the landslide body is narrow at the top and wide at the bottom, with an average width of 240-530 m and an area of 53 × 10⁴ m. In addition, the deformation rate at the front part of the Moli landslide is greater than that at the middle and rear parts, and the maximum deformation rate of the front edge is up to 140 mm/a. Deformation of the Moli landslide continues to occur even today; hence, the deformation monitoring should be further enforced, and emergency evacuation and relocation measures should be taken. This study provides a reference for the resurgence damage mechanism and emergency response of superlarge landslides in the study region.