The　existing　connection　between　the　concrete-filled　double　steel　tubular　(CFDST)　column　and　the　reinforced　concrete　(RC)　beam　is　difficult　to　repair　and　reuse　after　damage.　In　this　paper,　a　self-centering　joint　between　the　CFDST　column　and　the　RC　beam　is　proposed.　The　self-centering　of　the　joint　is　realized　by　prestressed　steel　strands,　and　the　energy　dissipation　is　realized　by　friction.　The　overall　purpose　of　the　research　is　to　analyze　the　influence　of　steel　strand　and　friction　on　the　mechanical　behavior　of　the　joint.　By　comparing　the　envelope　curve　and　the　restoring　force　model　of　a　numerical　joint　model　with　theoretical　values,　accuracy　of　the　numerical　model　was　verified.　Then,　joints　with　different　parameters,　including　the　friction,　prestress　of　steel　strands,　and　ratio　of　the　resisting　moment　provided　by　steel　strands　to　the　resisting　moment　provided　by　friction　in　the　opening　moment　of　joints,　were　numerically　analyzed.　The　results　showed　that　the　joints　with　greater　friction　and　prestress　of　steel　strands　had　higher　bearing　capacity.　Increasing　the　friction　could　increase　the　energy　dissipation　capacity　of　the　joint,　but　it　would　increase　the　residual　deformation　of　the　joint.　To　reduce　residual　deformation,　the　prestress　of　steel　strands　should　be　increased.　When　the　resultant　force　of　the　pretension　of　steel　strands　was　greater　than　friction,　the　steel　head　could　be　kept　pressed　on　the　connecting　block,　making　the　stress　changes　of　steel　strands　and　the　self-centering　performance　of　the　joint　stable.