To　ensure　not　only　good　workability　in　fresh　stage　but　also　mechanical　and　deformation　properties　after　hardening　of　self-compacting　concrete　(SCC)　applied　in　concrete　filled　steel　tubular　structures,the　mix　optimization　of　SCC　was　made　to　meet　the　requirements　of　concrete　filled　steel　tubular　structures.　The　pumping　trials　of　SCC　and　normal　concrete　(NC)　filled　arch　steel　tubes　were　both　carried　out　on　site;the　results　show　that　the　SCC　mixtures　can　be　pumped　conveniently　without　undergoing　any　segregation.　To　study　the　mechanical　properties　of　SCC　filled　steel　tubes,uni-axial　compressive　tests　of　concrete　filled　tubes　were　conducted.　The　test　specimens　also　include　the　short　members　of　concrete　filled　steel　tubes　(CFST),　which　were　cut　from　the　arch　steel　tubes　of　pumping　trials.　The　results　show　that　the　mechanical　and　deformation　properties　such　as　elastic　modulus,　ultimate　bearing　capacity　of　the　self-compacting　concrete　short　tubes　do　not　differ　significantly　from　the　corresponding　properties　of　normal　concrete.　Finally,the　SCC　mixtures　was　applied　to　a　concrete　filled　steel　tubular　arch　bridge;the　detailed　description　of　the　SCC　mix　proportion　and　its　construction　technique　is　presented.　The　application　results　indicated　that　the　use　of　SCC　not　only　makes　construction　go　smoothly　and　rapidly　but　also　achieves　a　better　quality　of　construction　without　increasing　the　costs.