As　an　anode　material　for　sodium　ion　batteries　(SIBs),　SnO2　has　a　large　theoretical　capacity　of　1378　mA　h　g(-1).　However,　the　poor　cyclic　stability　caused　by　its　serious　volume　expansion　during　the　charge/discharge　process　has　become　the　biggest　obstacle　to　its　practicability.　In　this　paper,　one-dimensional　tubular　SnO2@TiO2　core-shell　nanocomposites　were　designed　and　synthesized　for　the　first　time　to　inhibit　the　volume　change　of　SnO2　during　(de)sodiation　process,　thus　greatly　improving　its　cyclic　stability.　The　SnO2@TiO2　anode　provides　a　capacity　of　316　mA　h　g(-1)　after　50　cycles　at　a　current　density　of　50　mA　g(-1)　and　the　initial　Coulombic　efficiency　(ICE)　is　49.7%.　By　contrast,　the　corresponding　figures　are　only　200　mA　h　g(-1)　and　29%　for　pristine　SnO2,　179　mA　h　g(-1)　and　32%　for　TiO2　nanotube,　respectively.　XPS,　TEM　and　HR-TEM　techniques　were　used　to　analyze　the　electronic　and　geometric　structures　of　the　composites.　The　excellent　electrochemical　performance　of　SnO2@TiO2　nanocomposites　were　further　demonstrated　by　kinetic　analysis　and　the　pseudo-capacitive　properties　of　SnO2@TiO2　electrodes　were　calculated　from　the　aspect　of　kinetics.　It　could　be　inferred　that　the　reasonable　structure　design　is　conducive　to　improve　the　sodium　storage　performance　of　the　SnO2@TiO2　composites,　and　may　provide　a　good　solution　for　further　development　of　SIBs.　(C)　2020　Elsevier　Ltd.　All　rights　reserved.