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A nano-scaled graphite oxide(GO)was prepared with a micro-layer structure for intercalation.Graphite-intercalated SnO2 was obtained at temperatures lower than 100℃.The morphology,microstructure,crystalline phases and thermal property of this intercalative composite were studied by atomic force microscopy(AFM),field-emission scanning electron microscopy(FE-SEM),X-ray diffractometry(XRD) and differential scanning calorimetry-thermogravimetry(DSC-TG)doped with a proper amount of graphite-intercalated composites(GITs),GIT-SnO2 composite was obtained after heat treatment.This combined gas sensor reveals low resistance and high sensitivity to butane between 200℃ and 300℃.