Particular　attention　has　been　given　to　the　complexity　of　the　elastic-porous　sandwich　structure　with　entangled　metallic　wire　mesh　(EMWM),　which　is　a　novel　rigid-flexible　heterogeneous　and　symmetrical　material.　The　orthogonal　experiment　design　for　vacuum　brazing　was　adopted　for　sensitivity　analysis　of　the　key　fabrication　process　on　the　performances　of　an　EMWM　sandwich　structure.　The　shear　behaviors　of　the　sandwich　structures　with　different　vacuum　brazing　parameters　(e.g.,　heating　rate,　brazing　temperature,　and　holding　time)　were　analyzed　by　mechanical　experiments　and　an　interfacial　microstructure.　The　results　indicated　that　the　failure　behavior　of　the　sandwich　structure　could　be　divided　into　four　stages　in　the　mode-I　experiment.　In　addition,　the　joint　quality　of　the　different　vacuum　brazing　process　could　be　shown　by　the　mode-II　experiment,　and　the　failure　behaviors　involves　three　stages.　Additionally,　the　failure　behaviors　of　the　sandwich　structure　were　mainly　associated　with　the　deformation　of　the　EMWM　core　and　the　strength　of　the　brazing　joint.　In　addition,　the　relationship　between　the　joint　strength　and　the　shear　performance　of　the　sandwich　structure　was　revealed　through　the　interfacial　microstructure.　Furthermore,　the　importance　of　the　optimized　vacuum　brazing　parameters　to　fabricate　the　novel　sandwich　structure　with　the　best　joint　performance　was　demonstrated　in　this　work.