To improve corrosion inhibition and activation properties of aluminum, effects of additives (propargyl
alcohol) on electrochemical properties of aluminum anode(99. 999%)in 4 mol/ L KOH solution were studied by using electrochemi al methods. The results show that corrosion of aluminum is inhibited, corrosion inhibition ratio is 85郾35% and that Eocp is also improved when 0. 5% propargyl alcohol is added into 4 mol/ L KOH. It not only decrea ses corrosion rate (93. 21% of corrosion inhibition ratio), but also increases activation properties of aluminum and that Eocp, reaches – 2. 011 V when 0. 5% propargyl alcohol is added into “4 mol/ L KOH + saturated Ca (OH)2冶.