Plateau　vegetation　is　considered　to　be　highly　sensitive　to　climate　change,　especially　at　higher　altitudes.　Although　the　Tibetan　Plateau　has　experienced　intensive　warming　over　the　past　few　decades,　there　is　much　contradictory　evidence　regarding　its　phenological　variations　and　the　impact　of　climatic　change.　In　this　study,　we　explored　vegetation　phenology　through　the　inflexion　point-based　method　with　the　weekly　0.05°　EVI2　datasets　from　1982　to　2010.　We　observed　complex　spatiotemporal　variations　in　vegetation　phenology　on　the　higher　Tibetan　Plateau　from　three　aspects.　From　a　spatial　aspect,　the　altitudinal　gradients　of　phenological　dates,　as　well　as　their　directions,　varied　among　different　altitudes　over　the　past　three　decades.　Compared　with　delaying　with　elevation　at　altitudes　below　5000 m,　the　phenological　parameters　at　altitudes　above　5000 m　significantly　advanced　with　increasing　altitudes.　At　higher　altitudes,　much　stronger　altitudinal　gradients　(slope)　of　phenological　dates　were　observed　in　the　2000s　than　in　the　1980s　and　1990s,　i.e.,　2.19,　3.47,　and　3.68 days’　advance　for　start,　maximum,　and　end　dates,　respectively,　compared　to　less　than　1 day’s　change　per　100 m　increase　in　altitude.　From　a　temporal　dynamic　aspect,　when　analyzed　at　different　altitudinal　bands,　the　dynamic　trends　in　phenological　dates　were　generally　not　significant　except　the　advancing　trends　in　the　maximum　dates　at　altitudes　above　5000 m　and　the　delaying　trend　in　the　end　dates　at　altitudes　of　4500–5000 m　in　the　twenty-first　century.　Remarkable　elevation　dependency　was　also　observed　at　the　pixel　level:　increasing　amplitudes　of　phenological　dynamic　trends　were　observed　at　higher　altitudes　when　obtaining　their　minimum　around　5000 m.　These　spatiotemporal　variations　of　vegetation　phenology　were　due　to　combined　effects　from　both　temperature　and　precipitation:　more　abundant　rainfall　and　greater　magnitudes　of　dynamic　trends　were　observed　in　the　average　daily　minimum　temperature　(slope = 0.08 °C/year)　and　annual　precipitation　(slope = 2.17 mm/year)　at　higher　altitudes.　©　2016,　ISB.