In　this　work,　we　synthesized　(Co(t)/Pt)(3)　multilayers　and　quantitatively　determined　thickness　and　temperature　dependence　of　spin　reorientation　transition　(SRT)　and　perpendicular　magnetic　anisotropy　(PMA)　using　ferromagnetic　resonance　measurement.　The　critical　thickness　for　PMA　switching　as　well　as　tremendous　magnetic　anisotropy　change　up　to　645　Oe　once　the　temperature　varies　from　25　degrees　C　to　-153　degrees　C　are　demonstrated.　More　interestingly,　a　four-fold　symmetry　of　magnetic　anisotropy　was　found　to　be　prominent　during　the　SRT.　By　conducting　magnetic　simulation　with　involving　high　order　energy　term,　we　highly　related　this　phenomenon　to　the　strong　spin-orbital　coupling,　which　is　considered　to　be　the　major　energy　term　to　tip　the　balance　between　the　surface　anisotropy　and　shape　anisotropy.　These　results　provide　an　opportunity　for　better　understanding　the　transition　behaviors　which　is　essential　for　PMA　structure　preparation　and　their　related　devices.　Published　by　AIP　Publishing.