To　investigate　the　vibration　reduction　effect　of　wind-resistant　supports　added　on　an　isolation　layer　when　an　isolation　structure　locating　at　a　large　wind　pressure　area,　taking　an　actual　base-isolated　structure　as　a　background,　setting　goals　that　structural　horizontal　damping　coefficient　was　less　than　0.53　or　0.40,　two　models　for　the　isolation　structure　with　and　without　wind-resistant　supports　were　established.　Adopting　the　dynamic　time-history　analysis,　the　structural　seismic　responses　of　these　two　models　were　compared.　The　results　showed　that　the　seismic　responses　of　the　two　models　are　significantly　reduced　compared　with　that　of　an　aseismic　structure;　for　the　model　without　wind-resistant　supports,　LRB　number　increases　to　meet　the　anti-wind　design　requirements,　but　its　aseismic　effect　reduces;　while　for　the　model　with　wind-resistant　supports,　LRB　number　decreases,　its　aseimic　effect　rises;　under　normal　operation　conditions　and　small　earthquake,　wind-resistant　supports　join　working　and　the　isolation　layer　does　not　yield,　when　the　structure　suffers　a　fortification　earthquake,　the　wind　resistant　supports　yield,　they　are　destroyed　and　out　of　work,　but　they　do　not　affect　the　upper　structure＇s　aseismic　effect.