In order to study the electrochemical characteristics of reinforced concrete with different mineral admixtures after carbonization， the electrochemical workstation was used to conduct non-destructive testing regularly， and the changes of the microstructure of reinforced concrete during the carbonation cycle were analyzed by electrochemical parameters such as polarization curve and AC impedance graph. Kramers-kronig conversion was used to verify the AC impedance data， and an appropriate equivalent circuit was selected to perform electrochemical parameter fitting. Chi-square test was used to verify the fitting degree of parameters. The results show that the equivalent circuit R（QR）（QR） can effectively fit the electrochemical impedance spectrum of reinforced concrete in carbonized environment， and the chi-square value of equivalent circuit fitting is recommended to be less than 10-4 orders of magnitude. In the carbonization corrosion environment， with the increase of carbonization period， the resistance value of concrete shows a trend of fluctuation increase， and the resistance of steel shows a trend of fluctuation decrease. Polarization curve with the increase of carbon cycle entirely moves to the corrosion current density and negative potential direction， at 49 d， the reinforcement corrosion degree was from big to small order as the mixed system， single doped system， the benchmark system， three mixed system， and single with double mixing system concrete is nearly at medium corrosion state， while benchmarking and three concrete mixing system is still in the low state of corrosion. Under different gel systems， the single and double doped reinforced concrete is more sensitive to carbonation corrosion environment， while the triple doped reinforced concrete has the best carbonation resistance.