Two electrochemical experiment were applied in the evaluation of the efficiency of corrosion inhibitors and the corrosion resistance of coatings for bronze artifacts. This is DC polarization resistance method was for corrosion inhibition efficiency evaluation, and potentiostatic Altemating Current impedance method was for corrosion resistance of the coatings efficiency evaluation. The results showed that the efficiency of composite corrosion inhibitors was better than that of single inhibitors. The inhibition efficiencies of 2Amino5mercapto1,3,4thiadiazde (AMT) and Benzotriazole (BTA) used separately in wet simulated neutral soil media were 88.7% and 94.6%, while that of the composite inhibitor of AMT and BTA was up to 98.8%. AMT and BTA showed good synergistic effects. Potentiostatic Alternating Current (AC) impedance experiments was used to understand the complex corrosion processes of coated bronze samples. The Nyquist spectra showed that the impedance characteristic of paraffin wax coated samples was affected by the diffusion process, but that samples coated with polyvinyl butyral, Paraloid B72and uncoated (BTA inhibition layer only) were affected by the micropores of the coatings. At the same concentration, the corrosion resistance of the three sorting was followed by a decreasing trend. At the same concentration, the anticorrosion capacities of the various coating materials were paraffin wax＞polyvinyl butyral＞Paraloid B72.