Corrosion of construction material in high temperature water is one of the important problems of nuclear reactor. Lately research shows that TiO
2 inhabiting species can alleviate local corrosion, such as stress corrosion cracking (SCC) and intergranular attack (IGA) of steam generator tubes, and thus prolong the life of SG tube. This paper has studied the corrosion potentials and polarization carve of steel stainless in caustic solution with TiO
2 inhabiting species, and it shows that TiO
2 have positive effect.