To address the insufficient electrostatic adsorption capacity of traditional triazole corrosion inhibitors in strong acid environments，this study proposes a “ dual-active-center ” molecular design strategy. A novel quaternized inhibitor，Q 3 -A T，was synthesized via the nucleophilic ring-opening reaction between 3 -amino- 1 , 2 , 4 -triazole and 2 , 3 -epoxypropyltrimethylammonium chloride，and its structure was confirmed by FT-IR and ¹H-NMR. The corrosion inhibition performance and adsorption behavior of Q 3 -A T on N 80 steel in 1 mol/L HCl solution were systematically investigated using weight loss measurement，electrochemical techniques （EIS and potentiodynamic polarization），and surface analysis methods （SEM/AFM/XPS/contact angle measurement） . The results showed that Q 3 -A T acted as an excellent mixed-type inhibitor，and the inhibition efficiency reached 96 . 34 % at the concentration of 500 mg/L. Thermodynamic analysis indicated that the adsorption of Q 3 -A T on N 80 steel surface conformed to the Langmuir monolayer adsorption model，and it was a spontaneous mixed physisorption-chemisorption process. Surface morphology analysis confirmed that the addition of Q 3 -A T significantly reduced the surface roughness of the substrate （from 160 nm to 106 nm） and improved surface hydrophobicity. The detection of N — Fe coordination bonds by XPS further verified the existence of chemisorption. A synergistic “ electrostatic anchor-coordination claw ” corrosion inhibition mechanism was proposed：Q 3 -A T rapidly pre-adsorbed onto the negatively charged interface using quaternary ammonium cations as “ electrostatic anchors ”，and then formed stable chemical bonds with iron using triazole rings as “ coordination claws ” . This work provides a novel molecular design strategy for developing high-efficiency corrosion inhibitors for oil and gas acidizing operations.