The effect of different types of corrosion inhibitors， such as anodic corrosion inhibitors Na₂CrO₄ and Na₂MoO₄， cathodic corrosion inhibitors benzotriazole （BTA） and N，N-dimethylethanolamine （DMEA）， and their combination on the corrosion inhibition of steel bars in carbonated reinforced concrete was investigated. The corrosion degree and corrosion rate of steel bars in carbonated reinforced concrete were evaluated by spontaneous potential， corrosion area percent and mass loss percent of steel bars and electrochemical method. The results show that the corrosion resistance of steel bars in carbonated reinforced concrete increases with the increase of corrosion inhibitor content and decreases with the increase of carbonation time. The corrosion degree of steel bars in carbonated reinforced concrete with 1.00% Na₂MoO₄ and 1.00% BTA addition is the least among all the specimens and the corrosion inhibition effect is the best. The effect of compound corrosion inhibitor on retarding corrosion rate of steel bars is better than that of single corrosion inhibitor， and the effect of adding the combination of Na₂MoO₄ and BTA is the best.