A　major　obstacle　in　realizing　Na-ion　batteries　(NIBs)　is　the　absence　of　suitable　anode　materials.　Herein,　we　firstly　report　the　anatase　TiO2　mesocages　constructed　by　crystallographically　oriented　nanoparticle　subunits　as　a　high　performance　anode　for　NIBs.　The　mesocages　with　tunable　microstructures,　high　surface　area　(204　m(2)　g(-1))　and　uniform　mesoporous　structure　were　firstly　prepared　by　a　general　synthesis　method　under　the　assist　of　sodium　dodecyl　sulfate　(SDS).　It＇s　notable　that　the　TiO2　mesocages　exhibit　a　large　reversible　capacity　and　good　rate　capability.　A　stable　capacity　of　93　mAhg　(1)　can　be　retained　after　500　cycles　at　10　C　in　the　range　of　0.01-2.5　V,　indicating　high　rate　performance　and　good　cycling　stability.　This　could　be　due　to　the　uniform　architecture　of　iso-oriented　mesocage　structure　with　few　grain　boundaries　and　nanoporous　nature,　allowing　fast　electron　and　ion　transport,　and　providing　more　active　sites　as　well　as　freedom　for　volume　change　during　Na-ion　insertion.　CV　measurements　demonstrate　that　the　sodium-ion　storage　process　of　anatase　mesocages　is　mainly　controlled　by　pseudocapacitive　behavior,　which　is　different　from　the　lithium-ion　storage　and　further　facilitates　the　high　rate　capability.