The　traditional　metal　dampers　have　the　disadvantages　such　as　higher　yield　point　and　inadequate　adjustability.　To　overcome　these　deficiencies,　a　compound　mental　damper　which　comprises　the　low　yield　point　steel　plates　and　common　steel　plates　is　presented.　The　optimization　objectives　including　＇maximum　rigidity＇　and　＇full　stress　state＇　are　proposed　to　obtain　the　optimal　shape　of　compound　mental　damper.　The　numerical　simulation　results　show　that　the　compound　mental　damper　has　the　advantages　such　as　the　full　hysteresis　performance　and　uniform　stress　state,　and　the　integral　yield　point　can　be　regulated.　In　view　of　the　mechanical　characteristic　of　the　compound　metal　damper,　the　equivalent　model　of　eccentric　cross　bracing　is　established,　and　the　approximate　analytical　solution　of　the　yield　strength　and　the　yield　displacement　is　proposed.　The　nonlinear　simulation　analysis　is　carried　out　for　the　overall　aseismic　capacity　of　the　frame　structures　with　the　compound　mental　damper.　It　is　verified　that　the　compound　mental　damper　has　better　energy　dissipation　capacity　and　more　superior　seismic　performance,　especially　for　the　damper　with　optimized　shape.　©　2018,　Editorial　Department　of　JVMD.　All　right　reserved.