In this paper, the effects of amino alcohol inhibitor on the corrosion behavior of stress-loaded HRB400 steel in concrete simulated pore solution were studied by macroscopic and microscopic observation and steel-rust interface analysis. The potentiodynamic polarization and electrochemical impedance spectroscopy(EIS)technique were used to analyze the mechanism of the corrosion inhibition on stress-loaded HRB400 steel by amino alcohol organic inhibitor. The results show that with the increase of loading stress, the corrosion of HRB400 steel bars is aggravated, but the alkamine inhibitor can act on the surface of stress-loaded HRB400 steel bars, increase the thickness of the adsorption layer, and inhibit the chloride ion in the simulated concrete pore solution to the HRB400 matrix., and have the rust-proof effect