Previous　investigations　have　shown　that　the　confining　stress　paths　(CSPs)　of　confined　concrete　significantly　affected　the　compressive　behaviour　of　confined　concrete　in　fibre-reinforced　polymer　(FRP)　confined　concrete　or　concrete-filled　steel　tube　(CFST)　columns.　Unlike　the　concrete　in　FRP-confined　concrete　or　CFST　columns,　which　is　only　confined　by　external　materials,　e.g.,　FRP　sheet　or　steel　tube,　the　concrete　in　concrete-filled　double-skin　steel　tubular　(CFDST)　columns　is　confined　by　both　the　external　and　internal　steel　tubes.　Due　to　different　confinement　mechanisms,　the　CSPs　of　confined　concrete　in　CFDST　columns　may　be　different　from　those　in　FRP-confined　concrete　or　CFST　ones,　but　they　have　not　been　investigated　so　far.　In　this　paper,　the　CSPs　of　confined　concrete　in　circular　CFDST　stub　columns　were　experimentally　investigated,　and　their　corresponding　influences　on　the　compressive　strength　were　also　discussed.　It　is　shown　that　the　CSPs　of　confined　concrete　induced　by　the　external　tube　are　considerably　influenced　by　column　variables,　whereas　those　generated　by　the　internal　tube　found　no　obvious　trend.　Moreover,　the　results　suggest　that　the　compressive　strength　of　confined　concrete　in　specimens　with　a　confinement　coefficient　eta　less　than　2.731　is　CSP-dependent,　based　on　which,　a　compressive　strength　model　of　confined　concrete　considering　the　CSP　effect　is　developed　for　circular　CFDST　columns.　Based　on　this　model,　a　CSP-based　compressive　strength　model　for　estimating　the　ultimate　strength　of　CFDST　columns　is　proposed,　and　comparison　with　existing　models　against　the　collected　test　data　indicates　a　higher　accuracy　of　the　predictions　for　the　proposed　model.