Conductive composite having improved conductivity, and manufacturing method therefor

The present invention provides a conductive composite comprising: a thermoplastic polymer; a carbon nanotube; and a conductivity-improving additive, wherein the conductivity-improving additive comprises two or more selected from among a phenol-based compound, a phosphate-based compound, and a polyalkylene-based wax compound. Thus, it is possible to provide a conductive composite having remarkably improved conductivity by reducing the surface resistance while maintaining the basic physical properties of a thermoplastic polymer resin.