Epoxy resins, is an important class of reactive polymers, have been reported to be toughened by nanoparticles. Carbon nanotube (CNT) is tubular cylinder of carbon atoms having extraordinary mechanical, electrical, and thermal properties. In this article, present state of epoxy/CNT composite is given. Types of epoxy and hardening agents commonly employed in composite processing have been thrashed out. Frequently used fabrication techniques are discussed with particular emphasis on evaluating dispersion state of nanotube. Epoxy/CNT composite offer substantially improved properties compared to traditional fiber-reinforced epoxy composites. Finally potential relevance for efficiently transforming filler properties to matrix facilitating aerospace relevance is conversed. Downloaded by [University of Sussex Library] at 18:33 26 August 2015 2