Tin oxide/sponge carbon composite (SnO₂/C) is synthesized by solvothermal reaction. The expected electrode materials are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectrum. Related electrochemical properties are carried out by battery comprehensive testing system. The composite could remain its specific capacity at 660.5 mAh g-1 after 200 cycles and behaved superior rate performance. The experimental results show that SnO₂/C composite not only owned improved conductivity but also stable frame structure during lithiation/delithiation processes. So SnO₂/C composite behaved higher reversible specific capacity and rate performance than those of pure SnO₂ or SnC₂O₄. Based on its outstanding electrochemical performances, the SnO₂/C anode electrode is a hopeful candidate for future application in lithium ion battery system.