Traditional　steel　frames　will　experience　large　residual　drifts　under　strong　earthquakes.　An　innovative　re-centering　energy　dissipative　(RCED)　brace　was　developed,　which　was　able　to　pull　steel　frames　back　to　their　initial　positions　after　an　earthquake　and　dissipate　energy　by　a　friction　damper　device.　In　order　to　study　the　re-centering　and　energy　dissipation　capacities　of　RCED　braced　frame　(RCED-BF),　a　prefabricated　steel　frame　(PSF)　and　three　RCED-BFs　were　designed　and　tested.　The　results　show　that　the　RCED-BF　almost　dissipated　all　the　energy　by　the　RCED　brace.　The　diameter　of　high-strength　bolts　affected　the　energy　dissipation　capacity　of　RCED-BF　significantly,　while　that　of　tendons　did　not.　The　maximum　theoretical　value　of　the　energy　dissipation　coefficient　of　RCED-BF　was　4,　which　decreased　continuously　with　the　increase　of　the　maximum　lateral　deformation　of　RCED-BF.　The　stiffness　of　the　PSF　was　fairly　small　and　therefore　the　stiffness　of　RCED-BF　was　dominated　by　RCED　brace.　A　value　of　1.2　could　be　taken　as　the　re-centering　resistance　coefficient　of　the　RCED-BF.