On　the　basis　of　improved　method　of　Sarma,　studies　the　method　of　stability　evaluation　of　any　slide　surface　and　different　dank　slope,　and　develops　system　of　slope　stability　analysis　and　evaluation,　the　system　considers　application　of　ground　water,　seism,　additional　load　on　slope　or　consolidate　force.　It　has　many　functions　in　many　conditions,　such　as　calculation　of　stability　coefficient,　sensitive　analysis,　reliable　analysis,　the　best　consolidate　angle　and　consolidate　force.　This　method　has　been　a　compositive　and　accurate　method　of　evaluation　through　application　and　optimization　in　many　engineering　examples,　and　is　proved　to　be　effective　and　reliable.