Abstract: Earthquake-induced landslide is a catastrophic earthquake secondary disaster. The triggering factor of earthquake plays very important role in this kind of disaster. Many parameters can represent the influence factor of the earthquake. However, there are differences among their representative capabilities, which will exert great influence on the evaluation/forcasting result if these parameters are used. A method of combining the parameters into one is given based on Analytic Hierarchy Process (AHP). The discrepancy and difference between parameters can be compensated in this way. The calculated example shows that the result based on the combination of these parameters is far better than those obtained from single ones. This proves the feasibility of applying this method to evaluation of other kind of earthquake hazards.