Based　on　the　theory　of　reliability　and　the　consideration　of　stochastic　property　of　soil,　the　basic　idea　about　the　stochastic　finite　element　method　used　to　analyze　the　reliability　of　slope　stability　is　presented　in　this　paper,　then　the　reliability　formula　of　slope　stability　is　deduced　and　the　applied　program　is　developed　to　calculate　the　corresponding　reliability　index.　The　integrated　reliability　of　the　slope　stability　is　analyzed　by　searching　instability　pattern.　Finally,　an　engineering　example　shows　that　the　method　used　to　analyze　the　integrated　reliability　of　the　slope　stability　is　feasible　and　practical,　and　some　influencing　rules　of　selection　of　stochastic　variable　on　the　reliability　index　are　obtained　that　could　give　a　reference　to　relative　engineering　and　technical　Personnel.