A　comprehensive　landslide　classification　system　is　an　essential　tool　for　studying　the　development　law,　failure　mode,　disaster　mechanism,　and　space　prediction　on　the　southeastern　margin　of　the　Qinghai-Tibet　Plateau.　However,　there　is　no　unanimous　agreement　on　the　types　of　either　the　landslides　in　this　study　site　or　of　rock-related　slope　failures　in　general.　Thus,　the　aim　of　the　present　study　is　to　take　rock　mass　structure　and　geo-mechanical　action　characteristics　into　account　to　establish　a　model　of　a　landslide　division　system　in　the　Qinghai-Tibet　Plateau.　On　the　basis　of　digital　elevation　models,　field　investigations,　and　literature　surveys,　we　analysed　the　distribution　and　failure　mode　of　the　landslides　in　the　study　area.　The　geological　structure　and　characteristics　of　twenty　landslides　are　studied.　The　geo-mechanical　actions　of　the　seismic　fault　zone　and　deep-cutting　alpine　gorge　landform　on　the　southeastern　margin　of　the　Qinghai-Tibet　Plateau　are　analysed　to　better　understand　the　failure　modes.　We　divided　the　landslides　according　to　five　categories　rock　mass　structure　and　four　main　geo-mechanical　effects　controlling　landslide　development.　The　failure　mode　of　the　typical　type　observed　in　the　southeastern　margin　of　the　Qinghai-Tibet　Plateau　is　defined　as　follows:　accumulation　slip　type,　bedding　shear　type,　unloading　cutting　off　type,　exogenetic　type,　wedge　landslide,　debris　flow　and　freeze-thaw　landslide.　The　proposed　types　of　rock-related　landslides　are　incorporated　in　the　Oldrich　Hungr　update　classification　and　provide　compatibility　for　the　southeastern　margin　of　the　Qinghai-Tibet　Plateau　and　other　regions　with　similar　geomorphic　conditions.