Based　on　the　dynamical　characteristics　and　seismic　response　properties　of　the　long　span　hangar　with　space　frame,　a　3-dimensional　seismic　isolation　tactics　was　proposed　firstly.　Meanwhile,　a　new　type　of　bearing　was　developed.　According　to　the　experiment　result　of　the　bearing,　its　theoretical　model　was　supposed,　and　the　main　parameters　related　to　seismic　isolation　of　which　was　examined　on　detail　as　well.　It　is　shown　that　the　bearing　shares　good　performance.　In　addition,　a　rational　plan　incorporated　with　3-dimensional　seismic　isolation　bearing　of　the　hangar　was　selected,　and　the　simulated　analysis　of　the　isolated　structure　was　carried　out　lastly.　It　is　shown　that　the　3-dimensional　seismic　isolation　is　an　effective　means　to　mitigate　the　seismic　response　for　the　long　span　hangar　with　space　frame.