This　paper　mainly　analyzes　the　stability　of　the　waste　dump　of　Zijinshan　open-pit　mine.　ANSYS　software　was　used　to　establish　the　numerical　model　of　the　slope　of　the　waste　dump　according　to　the　geological　report　and　the　real　geographic　conditions.　The　displacement,　stress,　and　plastic　deformation　of　the　waste　dump　in　X　and　Y　directions　under　di`erent　number　of　overburden　layers　and　different　strength　reduction　factor　were　obtained,　so　as　to　obtain　the　safety　factor　of　the　slope　stability　of　the　waste　dump　and　give　waste　dump　operation　measures.