Cable　accessories　are　an　important　part　of　the　cable,　and　when　installed,　the　inside　of　the　accessories　is　prone　to　appear　defeats　and　is　affected　by　electrical,　temperature　and　stress.　In　this　paper,　a　simulation　model　of　10 kV　cable　accessories　with　different　insulation　defects　is　built,　and　the　impact　of　several　typical　defects　on　the　electrical,　mechanical　properties,　and　temperature　distribution　characteristics　of　cable　accessories　under　multi-field　coupling　effects　is　studied.　The　results　show　that　the　small　defects　have　almost　no　effect　on　the　temperature　distribution　of　the　cable　accessories,　but　the　stress　concentration　phenomenon　will　occur　at　the　cable　defects.　The　larger　the　modulus　of　the　defects,　the　maximum　stress　of　the　cable　accessories　will　also　increase.　Under　the　stress　action,　insulation　defects　will　make　the　deformation　of　the　cable　accessories　more　serious,　which　results　in　a　more　severe　distortion　of　the　electric　field,　and　the　maximum　electric　field　distortion　of　the　composite　defect　is　the　most　severe,　which　increases　by　41.6%　compared　with　the　absence　of　defects.　The　above　research　could　provide　a　theoretical　reference　for　the　insulation　detection　and　condition　evaluation　of　cable　accessories.　©　Beijing　Paike　Culture　Commu.　Co.,　Ltd.　2025.