To　study　the　influences　of　slot　sizes,　materials　of　friction　plates　and　types　of　gasket　on　the　mechanical　properties　of　slot　plate　of　friction　energy　dissipater　used　in　self-centering　brace,　12　groups　of　low-cyclic　loading　tests　were　proposed.　The　results　show　that　the　energy　dissipation　of　standard　holes　brass-slot　steel　friction　plates　is　most　stable　and　suitable　for　engineering　application,　compared　with　standard　holes　steel-slot　steel　friction　plates　and　standard　holes　carbon　fiber-slot　steel　friction　plates.　For　different　slot　sizes,　the　bearing　capacity　difference　can　be　neglected　with　the　max　value　of　2.27%;　in　the　loading　process,　the　average　losses　of　high　strength　bolt　pretension　force　and　coefficient　of　friction　are　3.7%　and　2.16%　respectively.　The　ratio　of　bearing　capacity　of　the　slot　plate　of　friction　energy　dissipater　(average　stable　sliding　friction)　and　the　theory　friction　is　92.01%.　Dish　gasket　can　properly　reduce　friction　loss　through　the　spring　back,　so　it　can　be　used　in　the　engineering.　The　bearing　capacity　calculation　formula　of　slot　plate　of　friction　energy　dissipater　used　in　self-centering　brace　was　also　obtained　to　provide　a　reference　for　engineering　application.　©　2017,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.