Based　on　the　seismic　response　characteristics　of　space　frame　structures,　a　new　type　of　seismic　isolation　bearing　defined　as　a　three-dimensional　seismic　isolation　bearing　(3DSIB)　is　developed　in　this　paper.　The　bearing　offers　excellent　properties　such　as　multi-dimensional　seismic　isolation,　reasonable　rotation　capability,　good　ability　to　resist　lifting　load,　uncoupled　stiffness　in　horizontal　and　vertical　directions,　etc.　In　the　3DSIB,　the　horizontal　dimension　is　designed　by　combining　the　Teflon　sliding　device　and　helical　spring,　while　the　vertical　dimension　is　developed　by　introducing　disk　springs　or　helical　springs.　The　mathematical　model　of　the　3DSIB　was　established　and　its　performance　with　the　critical　parameters　was　tested　on　a　shaking　table.　Furthermore,　the　3DSIB　was　applied　in　a　120　m　span　hangar　structure　and　simulated　using　S　AP2000　software　to　evaluate　its　performance　in　practical　structures.　The　performance　of　the　structures　with　and　without　3DSIB　was　compared.　It　is　shown　that　the　hangar　structure　with　3D　bearings　achieves　a　better　performance.　The　axial　force　and　acceleration　response　of　the　structures　with　3DSIB　are　effectively　reduced,　while　the　displacement　response　of　the　bearing　is　within　the　predetermined　range.