To　overcome　the　existing　rapid　capacity　decay,　low　conductivity　and　the　expands　and　contracts　in　volume　of　Si/C　composite　anodes　in　lithium　ion　batteries,　we　have　developed　a　silicon/carbon　composite　by　spray　drying　and　twice　organic　carbon　source　cladding　process.　The　samples　are　characterized　by　x-ray　diffraction　(XRD),　scanning　electron　microscopy　(SEM),　transmission　electron　microscopy　(TEM),　Raman　spectrometer,　thermogravimetric　analysis　and　x-ray　photoelectron　spectra　(XPS).　The　electrochemical　performance　are　analyzed　by　half-cell　and　full-cell　experiments.　The　results　show　that　the　silicon/carbon　composite　is　core-shell　structure　with　the　silicon　embedded　graphite　as　core　and　organic　carbon　layers　as　the　shell,　the　particle　size　range　from　8　μm　to　24　μm.　The　first　reversible　capacity　and　initial　coulombic　efficiency　of　the　silicon/carbon　composite　are　936.4　mAh　g-1　and　88.6%　in　half-cell.　The　silicon/carbon　composite　exhibits　a　high　capacity　retention　up　to　80%　after　680　cycles　in　full-cell,　indicating　an　excellent　cycling　stability.　The　structure　is　beneficial　to　control　volume　expansion,　improve　conductivity　and　electrochemical　performance.　©　2021　The　Author(s).　Published　by　IOP　Publishing　Ltd.