Highly conductive polyaniline(PAn)-nylon 6 composite fabric was prepared by immersing the nylon 6 fabric in 0.5M aniline+0.35M HCI aqueous solution at 40℃ for 2hours. Polymerization was then followed by mixing the prepared oxidant and dopant solution (0.5M(NH_4)_2S_2O_8+0.35M HCl) to the diffusion bath at 5℃ for 30minutes. The conductivity of prepared PAn-nylon 6 composite fabrics reached as high as 0.5 x 10^-1S/cm. Their conductivity were significantly affected by the aniline and oxidant concentration. As compared to those of nylon 6 fabric, heat of fusion, melting point, the degree of crystallinity and tensile strength of PAn-nylon 6 did not significantly changed by inclusion of PAn. In the aspect of serviceability, whereas the fabric conductivity was significantly decreased after multiple washing, no significant changes in the fabric conductivity were observed after abrading the composite fabric over 50 cycles. However we found that the fabric conductivity could be recovered by acid re-doping with HCI.