Ceramic　nanofibrous　nanostructure-based　sponges　have　attracted　significant　attention　due　to　ultrahigh　porosity,　low　thermal　conductivity,　large　specific　area,　and　chemical　stability.　From　the　regulation　of　the　fiber　itself　to　the　construction　method　of　3D　networks,　efforts　are　being　made　to　improve　the　mechanical　properties　of　ceramic　sponges　for　practical　applications.　So　far　resilient　compressibility　has　been　realized　in　ceramic　nanofibrous-based　sponges　via　structural　design,　but　they　still　show　brittle　fracture　under　a　more　complex　stress　state.　Herein,　we　introduced　a　highly　aligned　and　interwoven　Si3N4　nanofiber　sponge,　which　exhibits　superflexibility,　large　break　elongation　(＞80%),　large-strain　reversible　stretch　(20%),　and　good　resistance　to　tensile　fatigue.　The　ceramic　sponge　also　displays　reversible　compressibility　up　to　60%　strain,　puncture　resistance,　high　air　filtration　efficiency　(＞99.8%),　and　low　pressure　drop　(38%　of　cotton　fiber),　making　the　ceramic　sponge　a　high-performance　wearable　respirator　to　protect　us　from　harm　due　to　PM2.5　pollution　and　possible　microorganisms.　　©　2023　American　Chemical　Society.　All　rights　reserved.