In　order　to　meet　the　architecture　and　construction　needs　of　high　rise　buildings,　the　special-shaped　columns　are　becoming　more　and　more　widely　used.　In　this　study,　cyclic　tests　on　seven　special-shaped　bifurcated　Concrete　Filled　Steel　Tube　(CFST)　columns　are　carried　out.　Test　variables　are　the　column　cross　section　types　and　the　loading　directions.　The　strength,　ductility,　hysteretic　behavior,　energy　dissipation　ability,　failure　modes　and　seismic　mechanisms　are　analyzed.　Test　results　show　that:　the　cross-section　type　of　the　column　is　the　main　factor　influencing　the　seismic　behavior　of　the　specimens.　Compared　with　the　basic　cross　section　type,　the　strength,　ductility　and　energy　dissipation　capacity　of　the　strengthened　cross　section　type　all　significantly　increased.　The　cross　sections　with　the　inserted　angle　steel　or　circular　steel　tube　have　the　best　comprehensive　seismic　behavior.　Also,　the　loading　direction　has　a　considerable　influence　on　the　seismic　behavior.　Compares　with　the　short　axis　loading　specimen　C1-Y,　the　strength　of　the　long　axis　specimen　C1-X　and　45　degrees　axis　C1-Z　increase　by　92.5　%　and　44.0　%,　respectively,　indicating　that　the　differences　in　loading　direction　should　be　taken　into　consideration　in　the　seismic　design.　Based　on　the　test　results,　the　FEM　analysis　are　also　carried　out.　The　FEM　results　show　a　satisfactory　agreement　with　experimental　results.　The　concrete　constitutive　relationship　and　modelling　method　proposed　is　suitable　for　the　simulation　of　special-shaped　bifurcated　CFST　columns　with　multiple　cavities.