The “5·12” Wenchuan earthquake induced thousands of landslides, including hundreds of large-scale ones. The deformation and destroy characteristics of 20 large-scale landslides induced by Wenchuan earthquake found in our in-depth investigation and extensive survey, combined with the tools of shaking table test and numerical simulation, the authors find that their deformation and destroy model and intrinsic mechanical mechanism Wenchuan earthquake are significantly different from those of landsides induced by routine gravity.