Abstract: The preparation methods of epoxy/carbon nanotubes composites were introduced, including solution casting，in-situ polymerization，chemistry modification, mixed-curing agent assisted laying out, and resin transferring molding. The dispersion of carbon nanotubes in epoxy matrix was discussed. The recent development of conductive epoxy/carbon nanotubes composites at home and abroad were summarized and the factors effecting the conductive properties of the composites were analyzed, including the aspect ratio，surface modification, shear rate，and curing condition of the composites.

Key words: carbon nanotube, epoxy, composite, conductive property, percolation threshold