The　weld　quality　has　always　been　an　important　factor　affecting　the　development　of　exposed　CFT　column-base　joint.　In　this　paper,　a　new　type　of　exposed　RCFST　column-base　joint　is　proposed,　in　which　the　high　strength　steel　bars　(USD　685)　are　set　through　the　column　and　reinforced　concrete　foundation　without　any　base　plate　and　anchor　bolts.　Three　specimens,　the　varying　axial　force　ratio　(0,　0.25　and　0.5),　were　tested　under　cyclic　loadings.　In　addition,　the　bending　moment　capacity,　energy　dissipation　capacity　and　deformation　capacity　of　column-base　joints　were　clarified.　The　experimental　results　indicated　that　the　axial　force　ratio　increases　the　stiffness　and　the　bending　moment　and　improves　the　energy　dissipation　capacity　of　column-base　joints.　This　is　because　a　large　axial　force　can　limit　the　slip　between　steel　tubular　and　infilled　concrete　effectively.　The　specimens　show　stable　hysteresis　behavior.