Grey Correlation Model is employed analyze sensitivities of influencing factors. This model regards sensitive factors as sub-sequences

the corresponding safety factors as primary-sequences

top-difference as transforming method of basic data and correlative degrees as estimating indexes of sensitive factors. The model takes the Xiatudiling landslide which is located at Shuitianba

the area of the Three-Gorges reservoir as an example

and four influencing factors

respectively the cohesion of sliding zone(c)

the angle of internal friction of sliding zone(φ)

acceleration of earthquake and water level of the reservoir

are selected as sub-sequences and the safety factors

which are calculated by push method

are considered as primary-sequences. It is concluded that the values of C and φ are the most sensitive influencing factors of all of the factors.