Abstract: Carbon nanotubcs(CNTs) possess unique nanostructure and remarkable mechanical，physical，chemical and electronic properties. These properties make them attractive in many scientific and technological fields such as electronic structures, polymer composites and biological systems. Polymer/CNTs composites have attracted considerable attention of scientists in recent years. However, the poor dispersion of CVTs in organic solvent hinders the realization of their full potential. To overcome this obstack, the surface modification of CVTs becomes essential.In this paper, the structure and property of CNTs were briefly introduced. The methods of the surface modification of CVTs including chemical reaction, surface activation and polymer encapsulation were reviewed. The mechanical，thermal，electronic and friction properties of polymer/CNTs composites were int

Key words: carbon nanotubc, surface modification, polymer, application