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During the production process of oil and gas fields, brine containing CO2 and H2S is accompanied by natural gas output has a significant impact on the materials of oil and gas well equipment such as oil pipes, casings, gas pipelines, etc.Corrosion has a serious impact on the normal production of the entire gas field. CO2 induced steel rapid comprehensive corrosion and severe local corrosion lead to early occurrence of pipelines and equipment corrosion failure with serious consequences. In addition, CO2 is present in natural gas condensate wells.It can cause deep pit corrosion, mossy corrosion, and erosion. To address the above issues, we comprehensively analyzed the corrosive media containing CO2 and H2S in the gas field, as well as the corrosive media containing desorbed water and inorganic salts, and finally determined the AC-WSCI2 corrosion inhibitor formula and synthesis process. AC-WSCI2 corrosion inhibitor combines the advantages of imidazoline corrosion inhibitors, organic amine corrosion inhibitors, and quaternary ammonium salt corrosion inhibitors. It has no special irritating odor, good thermal stability, and low toxicity. It has a significant corrosion inhibition effect on systems containing CO2, H2S, and inorganic salts. It can be miscible with oil in any proportion and has good dispersion performance in high salinity water without affecting the physical, chemical and processing properties of crude oil.