To　analyze　the　thermal-fluid-structure　characteristics　of　swirl　cooling,　a　thermal-fluid-structure　coupled　model　and　a　fluid　model　were　established.　The　swirl　cooling　performance　for　two　models　was　compared　under　the　same　boundary　conditions.　The　temperature　and　structure　characteristics　of　the　thermal-fluid-structure　coupled　model　were　analyzed.　Results　showed　that　the　solid　wall　heat　transfer　has　little　influence　on　the　cooling　air　flow　field,　but　the　target　wall　heat　transfer　intensity　is　affected　by　the　solid　wall　heat　transfer　to　some　extent.　The　target　wall　heat　transfer　intensity　distribution　for　the　thermal-fluid-structure　coupled　model　is　more　uniform,　while　the　solid　wall　heat　transfer　intensity　between　the　high　and　low　heat　transfer　regions　decreases　along　the　cooling　air　flow　direction　gradually.　The　heat　transfer　intensity　of　the　high　heat　transfer　region　corresponding　to　swirl　nozzle　inlets　increases　along　the　cooling　air　flow　direction.　The　target　wall　average　heat　transfer　intensity　for　the　thermal-fluid-structure　coupled　model　has　a　5.05%　reduction　compared　with　the　fluid　model.　The　target　wall　temperature　is　obviously　influenced　by　the　solid　wall　heat　transfer.　The　target　wall　temperature　of　the　thermal-fluid-structure　coupled　model　is　more　uniform　than　the　fluid　model.　The　solid　region＇s　overall　temperature　of　the　thermal-fluid-structure　coupled　model　increases　gradually　along　the　flow　direction　of　the　cooling　air.　The　overall　stress　increases　first　and　then　decreases　along　the　same　direction,　and　the　stress　concentration　occurs　in　the　area　near　the　hub　and　shroud.　The　overall　strain　has　a　similar　changing　trend　with　the　overall　stress,　but　a　low　strain　region　appears　in　the　middle　region　on　the　solid　heat　transfer　surface.　©　2020,　Editorial　Office　of　Journal　of　Xi＇an　Jiaotong　University.　All　right　reserved.