Abstract: The 13th Typhoon “Soudelor” in 2015 had caused a huge loss in southern Zhejiang Province. This study takes Taishun County, the severest hit area as an objective to analyze development features of geoharazds caused by rainstorm during Soudelor, based on emergency survey result and field survey check. In this County, geological hazards showed uneven distributions in both space and time, mainly concentrating in Shiyang Town, and usually took place 3 hours before or 6 hours after the landfall. Geoharazds are mainly landslides in shallow soils, although small in size but fairly dangerous. They occur mostly in erosional hilly areas with topographic slopes between 15°～25°, which consists mainly of Quaternary residual bases and Late Jurassic Xishantou Formation(J₃x). The geological hazards are directly related to unusual typhoon rainstorms, as well as irregular human activities. At last, the authors predict the developing tendency of geological hazards in Taishun County, and put forward the prevention advice of “graded management and classified governance”.