The　traditional　Pall　friction　damping　brace　system　was　improved,　and　a　PFD-SMA　brace　system　was　presented,　which　makes　full　use　of　Pall　friction　dampers(PFD)　and　shape　memory　alloy(SMA)　so　that　the　system　has　the　energy　dissipation　ability　and　self-resetting　function.　The　shape　memory　alloy　bar　and　the　PFD-SMA　system　were　analyzed　using　ANSYS　based　on　geometric　nonlinearity.　The　results　show　that　the　capacity　of　the　shape　memory　bar　is　strong,　and　its　recovery　deformation　is　much　larger.　The　system　can　effectively　reduce　the　seismic　response　of　structure　to　improve　the　seismic　performance　of　the　high-rise　steel　frame,　so　the　system　has　a　dual　self-resetting　function　based　on　the　super　elastic　and　shape　memory　effects　of　SMA,　which　indicates　the　PFD-SMA　system　has　better　seismic　performance.