An electroconductive resin composition which is composed of a rubber-reinforced styrene resin having a controlled pH value of from 5.0 through 9.0 and a carbon material filler and a metal material filler as incorporated into the resin. A method of preparing the electroconductive resin composition where a rubber-reinforced styrene resin is adjusted to have a pH value of from 5.0 through 9.0 and a carbon material filler and a metal material filler are added to the resin.
