Abstract: typical engineering of crystallization on corrosion is presented.A newly-built high buildingis located on the ground of a former chemical plant. The groundwater contains of high concentra-tion and has crystallization corrosive effect on concrete. Crystallization corrosive mechanism of,treatment of polluted soils,method of detennining contaminant migntion through barriers and evalua-tion standard of crystallization corrosion are discussed.