The　purpose　of　this　study　is　to　propose　an　efficient　and　convenient　alcohol-amine　corrosion　inhibitor　(ACI)　to　enhance　the　durability　of　reinforced　concrete　in　hostile　environments.　In　this　study,　reinforced　concrete　without　ACI　and　with　0.5　%,　1.0　%,　and　1.5　%　ACI,　respectively,　were　placed　into　a　10　%　composite　salt　solution　for　coupling　test　of　freeze-thaw　cycle　and　dry-wet　cycle.　The　rust　resistance　and　CSE-FDC　resistance　of　ACI　were　studied　by　macroscopic　tests　(electrochemical　impedance　spectroscopy　(EIS)　and　dynamic　electrode　potential　curve　(DPP),　mechanical　properties　and　mass　loss),　and　the　influence　of　ACI　on　the　pore　structure　of　reinforced　concrete　and　the　micro-morphology　of　steel　surface　was　studied　by　microscopic　tests　(pore　spacing　parameters,　electron　microscope　scanning　(SEM)　and　X-ray　energy　spectrum　(EDS)).The　findings　revealed　that　the　CSE-FDC　resistance　of　reinforced　concrete　with　0.5　%,　1.0　%　and　1.5　%　ACI　increased　by　51.62　%,　66.73　%　and　32.82　%,　respectively,　and　the　porosity　decreased　by　50.10　%,　69.10　%,　and　23.57　%,　respectively,　compared　with　reference　specimens.　ACI　can　significantly　delay　the　depassivation　of　steel　by　harmful　ions　and　improve　the　electrochemical　properties　of　steel.　When　ACI　was　doped　at　1.0　%,　the　Rp　of　the　steel　reached　a　peak　value　of　1034.00　Omega　&　sdot;cm2,　which　was　in　a　low　corrosion　state,　and　the　rust　inhibition　efficiency　reached　a　maximum　value　of　98.05　%.　ACI　was　mainly　adsorbed　on　the　steel　surface　by　the　physicochemical　interaction　of　N　atoms　and　-OH　to　increase　the　passivation　film　resistance,　thus　increasing　the　chloride　ion　threshold　and　passivation　film　stability　to　enhance　the　corrosion　resistance　of　steel.　The　application　of　this　research　not　only　offers　a　new　method　for　inhibiting　the　corrosion　of　steel　in　concrete　but　also　offers　theoretical　knowledge　and　technical　support　for　further　study　on　the　corrosion　resistance　of　steel　under　a　harsh　environment.