A method to remove chloride in reinforced concrete was proposed by anodic oxidation of silver plate in the pore solution with chloride content over critical value. The result shows that after anodic oxidation of silver plate the chloride concen in pore solution is reduced, the polarization resistance of rebar is improved to the range of safety, the electric resistance of concrete, the electric resistance and capacitance of passive film on the surface of rebar and the diffusion impedance coefficient of reinforced concrete are improved with the result that the performance of anticorrosion of rebar in concrete is improved.The silver plate can be used repeatedly.