The stems of the plant Caralluma indica are used to create medication. Most people concur that one of the greatest ways to prevent metal from rusting is to use natural plant extract. They are easily accessible, non-toxic, friendly to the environment, biodegradable, extremely effective, and renewable resources. The effects of the Caralluma indica stem extract on the suppression of corrosion by 1M HCl solutions are the primary subject of this research. Weight loss procedures and isotherms adsorption are used to gather the necessary data. Based on the findings, it can be concluded that the extracts produced from 1M HCl solutions were effective corrosion inhibitors. When the concentration of the extract was raised, there was a corresponding rise in the efficiency of the inhibition. An inhibiting action can be produced by the Caralluma indica extract. The successful performance of the inhibitor can be attributed to phytochemical components with functional groups found in extracts of plants that have been adsorbed on the surface of the metal. Plant extract accurately mimics the corrosion of steel in acidic conditions, as indicated by data from weight deficit studies and adsorption isotherms, which validates the adsorption mechanism. Findings suggest that Caralluma indica stem extract acts as a corrosion inhibitor and can boost surface protection by covering up metal's active sites.