To　investigate　the　seismic　performance　of　prefabricated　steel　frame　structure　with　ribbed　thin　walls,　a　full-scale　two-story　two-span　structural　model　was　designed　and　constructed,　and　shaking　table　tests　of　12　test　groups　were　performed.　Three　seismic　waves,　i.e.,　El　Centro　wave,　Taft　wave,　and　an　artificial　wave,　were　selected　for　the　tests.　Peak　ground　acceleration　(PGA)　increased　from　0.07　g　to　1.2　g　gradually　during　the　tests　process.　Failure　characteristics,　dynamic　characteristics,　and　seismic　responses　of　the　model　were　studied　under　different　working　conditions.　Results　show　that　the　model　was　in　elastic　state　under　frequent　ground　motion　of　8　degrees,　and　the　damage　of　the　model　mainly　occurred　in　the　ribbed　thin　walls,　while　the　strain　of　the　steel　frame　was　low　under　rare　ground　motion　of　8　degrees.　With　the　increase　of　PGA,　the　thin　walls　cracked　gradually,　and　the　lateral　stiffness　of　the　model　degraded　gradually,　while　minor　damage　occurred　in　the　steel　frame.　When　PGA　reached　1.2　g,　the　lateral　stiffness　of　the　model　decreased　by　37.8%　in　X　direction　and　33.6%　in　Y　direction.　During　the　whole　tests　process,　the　damping　ratio　of　the　model　increased　gradually　between　4.29%　and　7.19%,　and　the　acceleration　magnification　factor　of　the　model　was　between　0.93　and　2.46,　which　was　obviously　lower　than　that　of　traditional　rigid　structure.　The　maximum　inter-story　drift　ratios　of　the　model　under　frequent　ground　motion　and　rare　ground　motion　of　8　degrees　were　1/868　and　1/220,　which　meet　the　drift　ratio　limits　according　to　the　design　code.　The　maximum　inter-story　drift　ratio　of　the　model　under　very　rare　ground　motion　of　9　degrees　was　1/71,　and　there　was　no　danger　of　collapse,　indicating　good　seismic　performance.　Hence,　prefabricated　steel　frame　structure　with　ribbed　thin　walls　can　be　applied　in　high　seismic　fortification　intensity　regions.　Copyright　©2020　Journal　of　Harbin　Institute　of　Technology.All　rights　reserved.