Two　concrete　filled　steel　tubular　arches　with　corrugated　steel　webs　(CFST-CSW　arch)　were　tested　under　symmetrical　and　asymmetrical　in-plane　loadings.　The　measured　deflections,　strains　of　steel　tube　and　corrugated　webs,　and　ultimate　loads　are　recorded.　Test　results　show　that　the　CFST-CSW　arch,　as　a　new　composite　structure,　has　good　behaviors,　in　which　the　advantages　of　both　corrugated　steel　webs　and　CFST　chords　can　be　exploited.　Compared　with　the　CFST　single　tubular　arch　and　dumbbell　shaped　arch,　the　rigidity　and　bearing　capacity　of　the　CFST-CSW　arch　is　greatly　improved;　And　the　joint　failure,　occurring　commonly　in　CFST　truss　arch,　can　be　avoided　in　CFST-CSW　arch,　thus　its　ductility　and　ultimate　loads　are　improved.　The　FE　analysis　results　show　that　the　dual　non-linearity　should　be　taken　into　account　in　calculation　of　its　ultimate　load　carrying　capacity.　The　Equivalent　Beam-Column　method　employed　in　CFST　single　tubular　arch　and　dumbbell　shaped　arch,　rather　than　the　Limit　State　method　employed　in　RC　arch,　is　valid　in　the　calculation　of　the　ultimate　load.