The sensitivity analysis method of landslide stability based on models of influencing factors is conducted to analyze sensitivities of influencing factors in their definition domains. This method regards influencing factors as sub-sequences

the corresponding safety factors as target-sequences. The area probability functions of influencing factors

which are calculated by cumulative distribution functions of sub-sequences

product with difference values of target-sequences respectively; then

results that are produced by those two values are summed to get decision values of sensitivity. With this method

taking Taishanmiao landslide for example

which is located at Fengjie county in the Three-Gorges reservoir. Based on the distribution functions of shear strength factors by analogy and statistics and the ones of maximum horizontal acceleration of earthquake and water level fluctuations by empirical analysis

the most sensitive factor among all influencing factors is obtained. Finally

the relation between the sonsitivity of landslide stability and variances of influencing factors is analyzed on basis of internal friction angle.