Abstract:The movement parameters such as movement distance and movement speed have been used by many scholars as key indicators for evaluating the extent and severity of high landslide hazards.The features of the slope shape,the physico-mechanical properties of the slope,both of these factors are the influencing factors of these indexes.The author through the collection and analysis of data of 17 typical high landslides, the data shows that high landslides generally have a gentle slope shape (polygonal slope).This article will reflect the steep slopes of the slope features of the high landslide shear outlets, the gradient of the gentle slopes, and the cohesion and internal friction angle that reflect the nature of the slope surface as movement parameters’ influencing factors.Based on the data and combined with experience, the range of variation of each influencing factor was determined. The UDEC numerical simulation experiment was designed according to the orthogonal design, The influence of various factors on the distance and speed of the high landslide was studied using range and variance analysis.The results show that: the extreme results show that the order of the primary and secondary impact movement distance is gentle mild slope>steep slope>>cohesion=internal friction angle, the order of primary and secondary affecting the movement speed is steep slope>>mild slope>cohesion>internal friction angle;the results of variance show that mild slope and steep slope are highly significant factors affecting the movement distance, steep slope is a significant factor affecting the speed, and the rest are insignificant factors.Landslide movement parameters are significantly affected by the terrain conditions of the site. Therefore, when assessing the scope and intensity of high landslide hazards, the slope shape below the shear outlet should be mainly considered.