Abstract: In this paper, the influences of the stray current on corrosion behaviors of the reinforcing steel bar in the ordinary concrete and anti-corrosion concrete with mineral admixtures placed in the common environment, chloride environment and freezing-thawing-chloride environments have been studied. Testing results show the stray current accelerates corrosion of the reinforcing steel bar in concrete placed in the chloride environment under coupling effects of the chloride and stray current. The current density induced corrosion of the reinforcing steel bar in the anti-corrosion concrete is 5 times the density of the normal concrete which has the same water-binder ratio as the anti-corrosion concrete. Corrosion of the stray current of the reinforcing steel bar in the anti-corrosion concrete can be remarkably retarded by 15 times than that in the normal concrete which has the same water-binder ratio as the anti-corrosion concrete in the chloride environment. Because of presence of the stray current, the freeze-thaw induced damage of concrete placed in the chloride environment is getting worse.