The effect of the various operating conditions on the removal of Chrominum and Cyanide from wastewater by using electrolysis with iron anode and aluminum cathode was investigated. The removal efficiency of Cr⁶⁺ and CN were increased as the pH was decreased, as the distance of electrode was decreased and the voltage was increased. The optimum conditions for the treatment of Cr⁶⁺ and CN containing wastewater were initial pH 3, 5volt, and the distance of electrode was 1cm. At these conditions, 99.44% of Cr⁶⁺ and 75% of CN were removed.