Alloying-type　anode　materials　are　hopeful　candidates　for　sodium　(Na)-ion　batteries　(SIBs)　because　of　their　high　theoretical　capacity　by　forming　Na-rich　intermetallic　compounds.　However,　the　huge　volume　changes　lead　to　serious　aggregation　and　crushing　of　active　materials　during　the　cycling　process,　resulting　in　a　rapid　decay　in　the　capacity　of　the　electrode　materials.　Herein,　we　report　the　manufacture　of　reduced　graphene　oxide　wrapped　on　the　surface　of　tin-antimony/nitrogen-doped　porous　carbon　nanofibers　(SnSb/N-PCNFs/rGO)　by　a　coaxial　electrospinning　technique　and　subsequent　annealing　treatment.　The　cooperative　effect　of　rGO　and　PCNFs　can　greatly　relieve　the　volume　expansion　of　the　SnSb　alloy　in　the　cycling　process　and　offer　more　insertion　sites　for　Na+　ions,　thus　significantly　improving　the　electrochemical　performance.　As　a　SIB　anode,　the　SnSb/N-PCNFs/rGO　composite　exhibits　better　reversible　capacity　(maintaining　416　mAh　g(-1)　at　100　mA　g(-1)　after　120　cycles),　excellent　rate　performance,　and　marvelous　cycle　performance　(up　to　303　mAh　g(-1)　at　2000　mA　g(-1)　after　1000　cycles),　making　it　a　hopeful　anode　candidate　for　SIBs.