There　is　yet　to　be　a　fully　assembled　long-span　steel　structure　system.　This　paper　proposes　a　fully　assembled　cable-piercing　ridge-tube　cable　dome　(FCRCD)　with　a　modular　assembly　ring　truss　(MART).　A　scale　model　of　FCRCD　with　MART　with　a　span　of　10　m　and　a　rise-span　ratio　of　1/10　was　designed　and　manufactured,　the　static　test　of　the　scale　model　was　conducted,　and　the　finite　element　model　(FEM)　was　established　and　analyzed.　The　structural　behavior　under　different　vertical　loads　was　studied　by　static　test　and　finite　element　analysis.　Simultaneously,　to　further　investigate　the　mechanical　properties　of　the　FCRCD　in　detail,　the　FEMs　of　the　ridge-tube　cable　dome　(RTCD)　with　MART　and　ridge-cable　cable　dome　(RCCD)　with　MART　were　established　and　analyzed　for　comparison　with　the　FCRCD　with　MART.　The　research　results　verified　that　the　innovative　FCRCD　has　good　stiffness,　stability,　bearing　capacity,　and　resistance　to　uneven　load;　the　FEM　method　is　correct,　and　the　FEM　analysis　is　accurate.　The　cable-piercing　ridge　tube　(CRT)　can　limit　the　relaxation　of　the　ridge　cable　to　about　10%,　improve　the　mechanical　properties　and　tensioning　efficiency,　and　reduce　the　prestressing　loss　of　the　FCRCD.　The　FCRCD　is　more　favorable　to　the　force　state　of　the　MART,　and　it　is　more　suitable　for　long-span　and　super-long-span　spatial　structures　and　can　meet　the　requirements　of　rigid　roof　laying.