The corrosion behavior of titanium in hydrogen peroxide solutions was studied by measuring the titanium ions concentration using spectrophotometer.The influence of additives(K+,Ca2+,Na+,Mg2+,Cl-,HPO42-,H2PO4-)on the corrosion behavior of titanium was discussed under different pH conditions.The results indicated that Ca2+ exhibited the highest inhibition to the titanium corrosion in hydrogen peroxide solutions.However,HPO42-behaved as an accelerator to the corrosion.It was considered that the Ca2+ inhibited the titanium corrosion probably by absorbed on the titanium surface to form a thin film of CaTiO3 or CaO2.The HPO42-accelerated the titanium corrosion,however,probably by increasing the defects of surface oxide films after absorption on the titanium surface.