［Objective］ Evaluation of the ecological sensitivity of water-level fluctuation zones of river-type reservoirs can clarify ecological risks， such as soil erosion and biodiversity decline in the region，in order to provide a basis for decision-making regarding the ecological safety of reservoirs. ［Methods］ The water level fluctuation zone of Longyangxia reservoir was taken as the research object， and GIS technique was used to evaluate four key factors： soil erosion sensitivity， biodiversity sensitivity， habitat sensitivity， and topographic sensitivity in the study area. The weight of each factor on comprehensive ecological sensitivity was determined， and comprehensive ecological sensitivity was calculated using the coefficient of variation method. ［Results］ ① The habitat and biodiversity sensitivities were moderately high， soil erosion sensitivity was moderately low， and topographic sensitivity was generally low. ② The topographic and habitat sensitivity factors had the highest weights in the comprehensive ecological sensitivity calculation at 38.4% and 25.5%， respectively. ③ A moderately low level of comprehensive ecological sensitivity was observed in 75.49% of the study area. ［Conclusion］ Topography sensitivity and habitat sensitivity were the dominant factors in the ecological sensitivity of the water level fluctuation zone of Longyangxia reservoir. The spatial distribution is characterized by the head of the reservoir showing higher sensitivity than the belly， and the belly showing higher sensitivity than the tail. Priority should be given to protecting the reservoir head.