The　present　study　performs　a　stability　analysis　of　a　three-dimensional　(3D)　rock　slope　in　disturbed　rock　masses　following　the　Generalized　Hoek-Brown　(GHB)　failure　criterion.　The　factor　of　safety　(FoS)　of　the　slope　is　derived　and　the　optimal　solution　is　captured　combining　the　limit　analysis　method　and　the　strength　reduction　technique.　It　is　indicated　by　the　parametric　analysis　that　the　3D　geometric　characteristics　have　a　significant　impact　on　slope　stability　such　that　FoS　decreases　sharply　with　the　increase　in　the　width-to-height　ratio　B/H　within　0＜B/H　＜=　2.0　and　thereafter　reaches　a　constant　value　asymptotically.　The　FoS　decreases　more　than　60%　linearly　when　the　disturbance　factor　D　increases　from　0　to　1.0.　Stability　charts　and　slope　angle　weight　factor　f　beta_3D　for　3D　slopes　are　proposed　to　provide　a　convenient　and　straightforward　approach　to　obtain　the　FoS　solutions　of　3D　slopes.　A　case　study　was　carried　out　to　apply　the　stability　charts　on　practical　engineering　cases,　which　showed　that　slope　stability　under　two-dimensional　(2D)　plane　strain　will　lead　to　conservative　results,　and　a　3D　stability　analysis　of　slope　is　more　appropriate,　especially　for　a　slope　with　a　limited　width.