Privacy　fatigue　is　a　new　perspective　to　explain　the　discrepancy　between　individual　attitude　and　behavior,　i.e.,　privacy　paradox.　Fatigued　users　are　powerless　about　privacy　decisions,　and　thus　＇forced　to　accept＇or　＇regardless　of　it＇.　In　order　to　understand　social　media　users＇　privacy　fatigue　comprehensively,　we　use　China＇s　mainstream　social　media　Weibo　as　the　background　to　conduct　experiments　on　428　users.　Specifically,　we　propose　and　verify　the　perceived　antecedents　and　behavioral　consequences　of　the　privacy　fatigue　model　based　on　the　Stimulus　Organism　Response　(S-O-R)　theory,　taking　personality　traits　as　the　moderating　factor.　Based　on　collectivist　culture,　the　study　provides　complementary　evidence　to　existing　research　on　cultural　factors.　We　hope　it　will　enrich　the　privacy　fatigue　theory,　helping　researchers　and　service　providers　pay　attention　to　users＇　potential　fatigue　and　implement　usable　privacy　design　in　real　systems　to　alleviate　privacy　fatigue.　©　2022　ACM.