The　objective　of　this　study　is　to　reveal　the　fire-induced　anti-slip　performance　and　failure　mechanism　of　cable　clamps　used　in　large-span　spatial　structures.　Taking　cable　clamps　as　the　research　object,　the　test　study　on　the　anti-slip　bearing　capacity　performance　under　real　fire　conditions　was　conducted,　and　the　influence　of　different　times　pre-thrust　force　levels　(0.3,　0.5,　0.7),　cable　types　(GF　(Galfan-coated　cable)and　MF　(Cable　of　locked　coil　wire　ropes)),　and　different　zinc　layer　thicknesses　(200um　and　500um)　on　the　anti-slip　bearing　capacity　of　cable　clamps　was　considered.　Finally,　a　prediction　model　for　the　anti-slip　performance　of　cable　clamps　under　transient　high　temperature　was　proposed.　The　research　results　show　that　as　the　pre-thrust　force　level　increases,　the　antislip　bearing　capacity　time　of　the　cable　clamp　decreases.　Under　the　same　cable　type,　as　the　zinc　layer　thickness　increases,　the　ultimate　slip　time　also　decreases.　By　comparing　the　bearing　capacity　of　cable　clamps　of　GF　and　MF,　it　is　found　that　under　high　pre-thrust　force　levels,　the　anti-slip　bearing　capacity　of　MF　is　better　than　that　of　GF;　as　the　pre-thrust　force　decreases,　the　anti-slip　bearing　capacity　of　GF　clamps　gradually　exceeds　that　of　MF　clamps.　A　prediction　equation　for　the　anti-slip　performance　of　cable　clamps　under　transient　high　temperature　was　proposed,　which　comprehensively　considers　the　thermal-mechanical　coupling　effects　such　as　temperature　and　prethrust　force,　and　accurately　predicts　the　entire　process　of　cable　clamp　slip　under　high　temperature　conditions.