Silicon　is　one　of　the　most　promising　anode　materials　for　lithium-ion　batteries　(LIBs),　but　it　suffers　from　pulverization　and　hence　poor　cycling　stability　due　to　the　large　volume　variation　during　lithiation/delithiation.　The　core-shell　structure　is　considered　as　an　effective　strategy　to　solve　the　expansion　problem　of　silicon-based　anodes.　In　this　paper,　the　double-shell　structured　Si@SnO2@C　nanocomposite　with　nano-silicon　as　the　core　and　SnO2,　C　as　the　shells　is　synthesized　by　a　facile　hydrothermal　method.　Structural　characterization　shows　that　Si@SnO2@C　nanocomposite　is　composed　of　crystalline　Si,　crystalline　SnO2　and　amorphous　C,　and　the　contents　of　them　are　42.1　wt%,　37.8　wt%　and　20.1　wt%,　respectively.　Transmission　electron　microscope　(TEM)　observations　confirm　the　double-shell　structure　of　Si@SnO2@C　nanocomposite,　and　the　thicknesses　of　the　SnO2　and　C　layers　are　20　and　7　nm.　The　Si@SnO2@C　electrode　exhibits　a　high　initial　discharge　capacity　of　2777　mAh　center　dot　g(-1)　at　100　mA　center　dot　g(-1)　and　an　excellent　rate　capability　of　340　mAh　center　dot　g(-1)　at　1500　mA　center　dot　g(-1).　The　outstanding　capacity　retention　is　50.2%　after　300　cycles　over　a　potential　of　0.01　to　2.00　V　(vs.　Li/Li+)　at　500　mAg(-1).　The　resistance　of　solid　electrolyte　interphase　(SEI)　film　(Rf)　and　charge　transfer　resistance　(Rct)　of　Si@SnO2@C　are　7.68　and　0.82　Omega,　which　are　relatively　smaller　than　those　of　Si@C　(21.64　and　2.62　Omega).　It　is　obviously　seen　that　the　SnO2　shell　can　reduce　the　charge　transfer　resistance,　leading　to　high　ion　and　electron　transport　efficiency　in　the　Si@SnO2@C　electrode.　The　incorporation　of　SnO2　shell　is　attributed　to　the　enhanced　rate　capability　and　cycling　performance　of　Si@SnO2@C　nanocomposite.