Graphene oxide (GO) was prepared with an improved method which refers to the Hum mer method,then the silver nanowire was surface modified in situ with polyvinyl pyrrolidone,and the graphene composited silver nanowire materials were prepared latter,which can disperse well in aqueous solu tion.This characteristic of the material is conducive to the further research and i ts application.X ray diffraction (XRD) experiment,ultraviolet visible spectropho tometer (UV-vis),scanning electron microscope (SEM) and Fourier transform infrared (FT-IR) spectroscopy analyzer were used for the characteriza tion of the samples.Results show that the reduction of graphene composited silver nanowires has ne w different physical characterization parameters with the precursor.The characteristic diffr action peaks in XRD pattern of this compound have been found,the absorption spectra show obvi ous peak different from the precursor,and the FTIR image of this material has given an evidence of the link between the modified silver nanowire and the graphene,that is the amide II vibration between nitrogen atoms and carbon atoms at 1535cm－1.This material may have good performance in nonlinear optics,photoelectric sensor and biological antibac terial fields.