To　overcome　the　shortages　of　existing　Rubber　Bearings　(RBs),　an　innovative　type　of　isolator,　named　as　Prestressed　Rubber　Bearing　(PRB),　is　presented　in　this　paper.　Base　on　conventional　laminated　Rubber　Bearing　(RB),　PRB　is　developed　by　increasing　the　thickness　of　rubber　layers,　setting　vertical　ducts　and　installing　prestress　tendons.　Through　the　vertical　and　horizontal　monotonic　loading　test,　the　vertical　and　horizontal　stiffness　of　PRBs　are　investigated.　The　empirical　formulas　for　stiffness　are　proposed.　Moreover,　the　hysteresis　behavior　and　the　energy　dissipation　capacity　of　PRBs　are　studied　by　reversed　cyclic　loading　test.　The　results　show　that　PRBs　not　only　have　the　horizontal　isolating　capacity　as　conventional　RBs,　but　also　have　the　capacity　of　horizontal　displacement-limitation　and　improved　capacity　of　energy　dissipation.