A　novel　three-dimensional　(3D)　isolation　bearing　for　bridge　structures　was　proposed,　the　new　isolation　device　is　composed　of　several　devices　mainly　including　combined　disk　spring,　rhombic　steel　plate　damper　and　conventional　horizontal　isolation　device,　e.g.　lead　rubber　bearing.　The　configuration　component　and　mechanical　design　method　are　introduced;　experimental　test　of　every　main　part　of　the　novel　bearing　was　performed　to　verify　its　mechanical　performance;　horizontal　and　vertical　pseudo-static　mechanical　behavior　of　the　proposed　3D　isolation　bearing　(3DIB)　were　tested　on　a　full-scale　3DIB,　respectively.　Experiment　tests　indicated　that　the　proposed　3DIB　has　reasonable　configuration　and　explicit　mechanical　transmission　mechanism;　the　employed　component　in　this　paper　can　satisfy　the　need　for　3D　isolation　technology　from　the　viewpoint　of　configuration　and　mechanical　aspect.　Pseudo-static　tests　and　case　study　revealed　that　appropriate　and　energy　dissipation　performance　can　be　achieved　by　reasonable　design,　keeping　favorable　stability　at　plentiful　displacement.