Nano-composite energetic materials research were reviewed including the preparation technologies of sol-gel method,solvent/non-solvent method,energetic ball milling method and porous metal/filler method. The experiment examples,detailed peculiarity and mutual relations of the methods were described. It is concluded that nano-composite energetic materials researches can unfold a novel way for energetic materials and improve their safety during storage and application compared to nano powders. The nano-composite energetic materials preparation theory and practice should be promoted to enrich and develop the energetic materials.