Featured　Application　Sodium-ion　batteries　and　gas　sensing　materials.　Abstract　Na2Ti7O15　(NTO)　can　be　selected　as　candidate　anode　for　high-performance　sodium-ion　batteries　(SIBs).　However,　there　are　few　reports　of　research　on　the　mechanical　properties　of　low-dimensional　NTO,　which　is　important　for　the　stability　of　SIBs.　In　this　work,　by　using　the　one-step　hydrothermal　method,　NTO　nanowires　(NWs)　with　good　orientation　were　prepared　successfully.　The　transmission　electron　microscopy　(TEM)　and　selected　area　electron　diffraction　(SAED)showed　that　the　NTO　NWs　had　a　good　aspect　ratio　and　dispersion,　with　lengths　over　20　m.　Further　microstructure　analysis　showed　that　the　nanowires　grew　along　the　(020)　direction,　and　there　were　some　＂stripe＂　structures　along　the　growing　direction,　which　provides　a　good　tunnel　structure　for　Na　ion　channels.　Further,　the　in　situ　mechanical　analysis　showed　that　the　NTO　NWs　had　excellent　elastic　deformation　characteristics　and　mechanical　structural　stability.　In　addition,　the　NTO　NWs　also　showed　a　good　gas　sensitivity　to　NO　and　NH3.　Our　results　showed　that　the　prepared　NTO　nanowires　with　a　stripe　tunnel　oriented-structure　and　excellent　mechanical　properties　may　have　a　potential　application　in　SIBs　or　other　wearable　sensor　devices.