Cable　dome　structure　is　a　kind　of　space　steel　structure　system　with　stay　cable,　hoop　cable,　ridge　cable　and　brace　strut.　In　order　to　study　the　mechanical　properties　of　cable　dome　with　different　stay　(steel　tie　rod　and　steel　cable),　two　6-m-span　cable　dome　structures　were　designed　and　manufactured.　One　is　with　steel　tie　rod　(SR),　other　is　with　steel　cable　(SC).　Meanwhile,　two　finite　element　models,　which　were　identical　with　the　solid　model,　were　established　to　analyzed　the　mechanical　properties　of　the　cable　dome　and　compared　with　the　test　results.　The　static　mechanical　properties　of　the　cable　domes　(SC,　SR)　with　Full-span　load　and　Half-　span　load　were　analyzed　by　test.　The　results　show　that　the　internal　forces　of　the　two　kinds　of　cable　domes　increased　with　the　increased　of　Full-span　load.　The　vertical　displacement　of　the　cable　dome　(SR)　was　smaller　than　that　of　the　cable　dome　(SC).　When　the　structure　was　under　Half-span　load,　the　stress　of　the　two　cable　domes　on　the　loading　side　was　relatively　complex,　and　the　internal　force　of　the　rods　on　the　loading　side　varies　greatly,　which　indicating　that　the　structure　was　very　sensitive　to　the　asymmetric　load.　The　variation　trend　between　the　simulated　value　and　the　test　value　was　consistent,　which　verifies　the　correctness　of　the　finite　element　model.　Furthermore,　the　natural　frequencies　of　the　structure　with　three　different　load　state　were　tested　by　using　the　exciter　excitation　method.　The　results　show　that　the　natural　frequencies　of　the　two　cables　were　dense,　and　the　damping　ratio　of　the　cable　dome　(SC)　structure　was　basically　in　the　range　of　0.0115-0.0238,　and　the　damping　ratio　of　the　cable　dome　structure　(SR)　was　basically　in　the　range　of　0.0081-0.0132,　Which　can　provide　reference　for　similar　cable　dome　structures　in　practical　projects.