A novel nano-material of carbon rod studded iron granules on its surface was prepared from needle coke with iron as catalyst by arc method in the vacuum condition. Its structure and composition was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). In the SEM images the carbon material showed cotton-like. The TEM results showed that the nano-material was bar-like with diameter of 20nm to 50nm and there were lots of iron particles studded on its surface. The analytical result of EDS showed that the chemical composition of materials mainly consisted of carbon and iron elements. The XRD analysis revealed that there were two sharp diffraction peaks, one was at 26.2° which corresponded to the (002) plane of graphite structure and the other was at 43.2° which corresponded to the (fcc) γ-Fe structure. The nano-material might be used as catalyst in the chemical reaction.