In order to investigate the performance of cathodic inhibitors in chloride concrete, the relationship between the performance and dosage of different corrosion inhibitors were studied using the half-cell potential method, steel mass loss method, linear polarization method, AC impedance spectroscopy method and X-ray photoelectron spectroscopy (XPS). The results show that in chloride concrete mixed with cathodic corrosion inhibitors (BTA and DMEA), the corrosion of the steel bars were greatly reduced compared to those without cathodic corrosion inhibitors. The effect of BTA was better than that of DMEA at the same dosage. According to the results, the performance of BTA will be better when the dosage ratio of chloridion to BTA is 1∶4, whereas that of DMEA is optimal when the dosage ratio of chloridion to DMEA is between1∶4 and 1∶2.