Combining　the　characteristics　of　concrete-filled　double-skin　steel　tube　(CFDST),　this　paper　devised　a　joint　construction　form　featuring　low-beam　with　haunch　partially　penetrating　into　the　inner　layer　of　steel　tube,　thus　proposing　the　joint　between　unequal-depth　steel　beam　with　haunch　and　CFDST　column.　This　paper　conducted　finite　element　analysis　of　this　novel　joint　under　low-cycle　reversed　loading　using　ABAQUS　software.　By　taking　beam　height　ratio,　axial　compression　ratio,　beam-column　width　ratio,　beam　flange　width-thickness　ratio,　and　beam　web　height-width　ratios　as　analysis　parameters,　the　seismic　performance　of　the　joint　was　systematically　studied.　The　results　indicated　that　beam　height　ratio,　axial　compression　ratio,　beam-column　width　ratio,　and　beam　flange　width-thickness　ratio　have　a　significant　impact　on　the　seismic　performance　of　the　joint,　while　the　beam　web　height　-width　ratios　has　a　minor　effect.　Furthermore,　through　the　analysis　of　the　force　mechanism　and　internal　force　derivation　of　the　core　area　of　the　joint　between　unequal-depth　steel　beam　with　haunch　and　CFDST　column,　a　shear　bearing　capacity　calculation　method　applicable　to　such　connections　was　established.　This　calculation　method　aligns　well　with　the　numerical　analysis　results　and　can　accurately　assess　the　shear　bearing　capacity　of　the　core　area　of　this　type　of　joints.