Polyaniline(PANI) is one of the most important conductive polymers.In recent years,the composite materials research and applications of PANI are paid more attention to.When conductive filler content on the percolation threshold,the conductive plastics come close to each other and form conductive network with increasing slightly of conductive filler,then electrons transmit in the conductive network and generate current.The influence of conductive fiber on conductive properties of filled type composite conductive plastic is introduced.