The　composite　materials　of　carbon　nano-tubes　(CNTs)/SnO2@　C　and　CNTs/SnO2,　with　one　dimensional　core/shell　architecture,　were　synthesized　in　one-pot　hydrothermal　method,　followed　by　annealing,　with　CNTs,　K2SnO3,　and　glucose　as　the　reactants.　The　impacts　of　the　synthesis　conditions　on　the　microstructures　and　properties　were　evaluated　with　X-ray　diffraction,　scanning　electron　microscopy,　transmission　microscopy　and　conventional　probes.　The　results　show　that　the　CNTs/SnO2@　C　is　a　good　anode　materials　for　Li　ion　battery.　For　example,　the　strengths　of　the　composite　materials　include　large　specific　surface　area,　good　dispersion,　SnO2　content　up　to　60%　(wt),　content　of　the　encapsulated　carbon　of　about　15%,　and　a　better　Li-ion　storage　capability.　In　addition,　the　highly　reversible　capacity　was　found　to　be　456.6　mAh/g,　in　the　test　at　a　charge-discharge　current　density　of　100　mA/g　after　50　cycles.