Experimental　research　on　three　truss　girders　made　with　steel　circular　hollow　sections　(CHS)　under　static　point　loading　at　quarter　span　from　either　end　is　presented　in　this　paper.　The　first　specimen　was　a　CHS　truss　girder,　the　second　one　was　a　circular　hollow　section　(CHS)　truss　girder　with　concrete　filled　in　the　upper　chord,　and　the　third　one　was　a　CHS　truss　girder　with　concrete　filled　in　both　the　upper　and　the　bottom　chord　members,　forming　a　concrete　filled　steel　tubular　(CFST)　truss　girder.　The　test　results　revealed　that　filling　concrete　in　the　chord　members　could　enhance　chord　member　s　axial,　flexural　and　radial　rigidities,　change　the　failure　mode　of　joints　as　well　as　improve　joint　performance.　However,　similar　to　CHS　truss　girder　specimen,　CFST　truss　girder　specimen　collapsed　due　to　joint　failure.　Because　filled　concrete　enhanced　joints,　not　only　the　truss　with　concrete　filled　in　the　upper　chord　but　also　that　with　CFST　bottom　chord　increased　the　load-carrying　capacity.　The　strength　-of　CHS　and　CFST　joints　as　well　as　load-carrying　capacity　of　truss　girders　was　discussed.