In　order　to　study　the　fire　resistant　performance　of　recycled　concrete　tubular　structures,　the　test　on　the　fire　resistant　performance　of　one　normal　concrete　specimen　and　two　recycled　concrete　specimens　has　been　carried　out.　The　differences　of　the　fire　endurance　and　temperature　field　distribution　have　been　analyzed.　Based　on　the　experiment,　the　numerical　simulation　on　temperature　fields　was　processed;　the　influence　of　wall　thickness　on　fire　resistant　performance　was　studied;　the　calculated　formula　of　load　bearing　capacity　of　the　specimens　under　high　temperature　was　proposed　as　well.　The　load　bearing　capacity　and　fire　endurance　of　8　tubular　structures　with　different　wall　thicknesses　and　different　concrete　were　analyzed　by　numerical　examples.　Results　show　that　comparing　to　normal　concrete　tubular　structures　with　the　same　wall　thickness,　the　fire　endurance　is　a　little　shorter　and　the　fire　resistant　performance　is　a　little　worse　for　the　recycled　concrete　specimens.　The　load　bearing　capacity,　the　fire　endurance　and　the　fire　resistant　performance　of　recycled　concrete　tubular　structures　increase　with　the　wall　thickness　increasing,　which　is　the　same　as　the　normal　concrete　tubular　structures.